--- product_id: 8052866 title: "DEWALT 20V MAX Cordless 4 1/2 Inch Slide-Switch Power Angle Grinder, Bare Tool Only (DCG407B)" brand: "dewalt" price: "$314.43" currency: USD in_stock: true category: "Dewalt" url: https://www.desertcart.us/products/8052866-dewalt-20v-max-cordless-4-1-2-inch-slide-switch store_origin: US region: United States of America --- # 850W brushless motor Up to 9,000 RPM no-load speed Kickback brake & E-Clutch safety DEWALT 20V MAX Cordless 4 1/2 Inch Slide-Switch Power Angle Grinder, Bare Tool Only (DCG407B) **Brand:** dewalt **Price:** $314.43 **Availability:** ✅ In Stock ## Summary > ⚙️ Grind smarter, not harder — power and protection in your hands! ## Quick Answers - **What is this?** DEWALT 20V MAX Cordless 4 1/2 Inch Slide-Switch Power Angle Grinder, Bare Tool Only (DCG407B) by dewalt - **How much does it cost?** $314.43 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/8052866-dewalt-20v-max-cordless-4-1-2-inch-slide-switch) ## Best For - dewalt enthusiasts ## Why This Product - Trusted dewalt brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Built to Last:** Durable mesh screens prevent debris damage, ensuring your tool stays job-ready. - • **Safety First, Always:** Advanced anti-rotation tech with kickback brake and E-Clutch keeps you protected on site. - • **Power Meets Precision:** 850W brushless motor delivers relentless performance for the toughest jobs. - • **Speed That Won't Quit:** Maintain constant speed under load with up to 9,000 RPM for flawless cuts every time. - • **Lightweight, All-Day Comfort:** At just 3.55 lbs, this grinder reduces fatigue so you can power through your projects. ## Overview The DEWALT 20V MAX Cordless 4.5 Inch Slide-Switch Power Angle Grinder (DCG407B) is a lightweight, brushless motor tool delivering up to 850 watts and 9,000 RPM. Designed with advanced safety features like kickback brake and E-Clutch, it offers up to 56 cuts on 1/2" rebar per charge (battery sold separately). Its durable construction includes mesh screens to protect internal components, making it a reliable choice for professional-grade grinding tasks. ## Description Complete grinding applications with the 20V MAX* Brushless Cordless 4.5 in. Slide-Switch Grinder that maintains constant speed under load. Equipped with overload protection and an efficient brushless motor, this cordless tool accommodates 4 in. - 5 in. wheels and includes both Type A and Type B guards to help provide 62841 Compliance. Designed for versatility and durability, this grinder features mesh screens that help prevent debris that can cause damage from entering internal components. Offering slide-switch operation for continual use, the 20V MAX* Brushless Cordless 4.5 in. Slide-Switch Grinder is ideal for tough days on the job (battery and charger are sold separately).||Complete grinding applications with the 20V MAX* Brushless Cordless 4.5 in. Slide-Switch Grinder that maintains constant speed under load. Equipped with overload protection and an efficient brushless motor, this cordless tool accommodates 4 in. - 5 in. wheels and includes both Type A and Type B guards to help provide 62841 Compliance. Designed for versatility and durability, this grinder features mesh screens that help prevent debris that can cause damage from entering internal components. Offering slide-switch operation for continual use, the 20V MAX* Brushless Cordless 4.5 in. Slide-Switch Grinder is ideal for tough days on the job (battery and charger are sold separately). ## Features - Run Time - Up to 56 cuts of 1/2" rebar** - Perform & Protect - This grinder is equipped with ANTI-ROTATION features including a Kickback Brake and E-Clutch. - Powerful Performance - Take on tough jobs with a brushless motor engineered to deliver up to 850 MWO and up to 9,000 RPM (no load). - Ergonomic & Lightweight - This grinder is light weight, 3.55 LBs (Bare Tool) to help prevent fatigue. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0DQYKZYMJ | | Best Sellers Rank | #20,586 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #16 in Power Angle Grinders | | Brand Name | DEWALT | | Color | Black, Yellow | | Customer Reviews | 4.4 4.4 out of 5 stars (49) | | Horsepower | 850 watts | | Included Components | (10) DCG407 4 1/2 IN. Grinder; (10) Side Handle; (10) Clip-On Guard; (10) Inner & Outer Flange; (10) Hex Wrench | | Item Dimensions L x W x H | 13"L x 6.75"W x 5.56"H | | Item Type Name | Angle Grinder | | Item Weight | 4.8 pounds | | Manufacturer | DEWALT | | Manufacturer Part Number | DCG407B | | Manufacturer Warranty Description | Manufacturer Warranty | | Material Type | Blend, Metal | | Maximum Rotational Speed | 9000 rpm | | Model Number | DCG407B | | Number of Items | 1 | | Power Source | Battery Powered | | Style Name | 20V MAX BL 4.5IN Grinder | | UPC | 885911979153 | | Unit Count | 1 Count | | Voltage | 20 volts | ## Product Details - **Brand:** DEWALT - **Material:** Blend, Metal - **Power Source:** Battery Powered - **Product Dimensions:** 13"L x 6.75"W x 5.56"H - **Style:** 20V MAX BL 4.5IN Grinder ## Images ![DEWALT 20V MAX Cordless 4 1/2 Inch Slide-Switch Power Angle Grinder, Bare Tool Only (DCG407B) - Image 1](https://m.media-amazon.com/images/I/615kXsovoZL.jpg) ![DEWALT 20V MAX Cordless 4 1/2 Inch Slide-Switch Power Angle Grinder, Bare Tool Only (DCG407B) - Image 2](https://m.media-amazon.com/images/I/31PNn5wUirL.jpg) ![DEWALT 20V MAX Cordless 4 1/2 Inch Slide-Switch Power Angle Grinder, Bare Tool Only (DCG407B) - Image 3](https://m.media-amazon.com/images/I/31yGfh3-syL.jpg) ![DEWALT 20V MAX Cordless 4 1/2 Inch Slide-Switch Power Angle Grinder, Bare Tool Only (DCG407B) - Image 4](https://m.media-amazon.com/images/I/31vWQVBDqnL.jpg) ![DEWALT 20V MAX Cordless 4 1/2 Inch Slide-Switch Power Angle Grinder, Bare Tool Only (DCG407B) - Image 5](https://m.media-amazon.com/images/I/31+h1bUlVEL.jpg) ## Available Options This product comes in different **Size, Style** options. ## Questions & Answers **Q: can I use 20V MAX Lithium Ion 5 AH battery for this tool? 5 AH is the correct one or no.** A: Any DeWalt or compatible 20v Li-Ion battery will work. They range from less than 2 Ah all the way up to 6 Ah. They'll all work the same, but the smaller the battery Ah capacity the less time they'll power the tool before recharging.I urge people to consider buying only the bare tool and buying generic DeWalt-compatible batteries. The difference today between the bare tool and the bundle that includes two 5.0 Ah batteries is $150. For $75 or less you can buy two generic DeWalt-compatible (IMPORTANT! all brands are keyed differently and are NOT interchangeable) 5.0 Ah batteries that work just fine. I have purchased 14 DeWalt or compatible 20v Li-Ion batteries thus far. All are working fine, and only two are DeWalt brand. The rest are Enegitech and some other no-name brands. I received one generic that had a problem, and the problem was trivial: the three "fuel gauge" lights would intermittently stay on permanently after the test button was pushed. The vendor immediately offered to refund half my money (I purchased them as a pair), or replace the battery. We decided to take the money and see how much of a problem it was for the lights to stay on. Wouldn't you know it. The problem soon went away! Sticky switch, I guess. But that's the only issue I've had, and we've used these A LOT. For $150, you can either buy these two DeWalt brand batteries or *4* generics. Trust me, if my experience is any indication, you'll be way happier to either spend half as much money for the same thing, or the same amount for twice as many batteries. Note: a 5.0 Ah battery lasts a LONG time. I don't have a grinder, so I don't know how long it'll run, but I have five brushless impact drivers, a hammer drill, a circular saw, a "Sawsall", and a portable shop vac, all DeWalt brand 20v Li-Ion tools. They all run GREAT on the generics. DeWalt doesn't manufacture batteries. They no doubt buy their batteries from the same Chinese factories that produce the generics. The only thing that's different is the cases and the way the slots are keyed so you can't use Black and Decker, Milwaukee, Bosch, etc. batteries interchangeably. The actual Li-Ion cells inside are all the same. **Q: Is this variable speed?** A: it varies from 0 to 6800rpm in less than a second. ;Dvariable speed would have been a feature i would appreciated a lot and would have made this tool even more useful. but still i'm using it a lot. **Q: Although the product description says it's ideal for electricians, do you think I could cut concrete if I were to use a 4 1/2 in diamond blade?** A: I've used this grinder to cut 1/2 in Hardiebacker when doing bathroom remodels. I use a cutoff/wafer wheel which isn't ideal for this use but it works. In my opinion it had adequate power but the fully charged battery lasted roughly 20 mins of almost continuous use (I cut about 4 sheets for a tub surround). So, to answer your question, I know it will cut concrete with a diamond wheel, but if I needed to use it continuously for an extended period of time I'd go with something corded which is the case with most battery powered saws/grinders. I hope this helps. **Q: How is the paddle switch on this compared to the trigger switch like all the other cordless grinders?** A: I find it to be far more ergonomic. Very smooth and responsive. You’ll love this grinder! Just be sure to get at least a 5ah battery or more for. 2ah only last like 10 min of continued use. ## Frequently Bought Together - DEWALT 20V MAX 4-1/2 Inch Cordless Angle Grinder, Bare Tool Only (DCG412B) - DEWALT 20V MAX Circular Saw, 6-1/2-Inch Blade, 460 MWO Engine, 0-50 Degree Bevel Capability, Bare Tool Only (DCS391B) - DEWALT 20V MAX Reciprocating Saw, 3,000 Strokes Per Minute, Variable Speed Trigger, Bare Tool Only (DCS380B) --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.us/products/8052866-dewalt-20v-max-cordless-4-1-2-inch-slide-switch](https://www.desertcart.us/products/8052866-dewalt-20v-max-cordless-4-1-2-inch-slide-switch) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-09-11*