--- product_id: 433886200 title: "Tapered Ball Nose End Mill 1/4\" X 3\" with 0.25mm Ball Nose 5.26Deg for CNC Machine Engraving Carving Bits H-Si Coated" brand: "spetool" price: "$70.06" currency: USD in_stock: true reviews_count: 5 url: https://www.desertcart.us/products/433886200-tapered-ball-nose-end-mill-1-4-x-3-0 store_origin: US region: United States of America --- # Long Service Life 1/4" Shank Diameter 2 Flutes Tapered Ball Nose End Mill 1/4" X 3" with 0.25mm Ball Nose 5.26Deg for CNC Machine Engraving Carving Bits H-Si Coated **Brand:** spetool **Price:** $70.06 **Availability:** ✅ In Stock ## Summary > 🔩 Elevate Your Craft with Precision! ## Quick Answers - **What is this?** Tapered Ball Nose End Mill 1/4" X 3" with 0.25mm Ball Nose 5.26Deg for CNC Machine Engraving Carving Bits H-Si Coated by spetool - **How much does it cost?** $70.06 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/433886200-tapered-ball-nose-end-mill-1-4-x-3-0) ## Best For - spetool enthusiasts ## Why This Product - Trusted spetool brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Enhanced Durability:** H-Si coating ensures longevity and reduces cutter changes. - • **Precision Engineering:** Crafted for impeccable accuracy in CNC machining. - • **Optimized Flute Design:** 2 flutes for efficient chip removal and smoother finishes. - • **Time-Saving Efficiency:** Decreases production time, maximizing your output. - • **Versatile Material Compatibility:** Perfect for a range of materials from acrylic to titanium. ## Overview The SpeTool Tapered Ball Nose End Mill is a high-performance cutting tool designed for CNC machines, featuring a 1/4" shank diameter, 2 flutes, and a specialized H-Si coating. With a ball radius of 0.25mm and a tapered angle of 5.26 degrees, this end mill is ideal for engraving and carving across various materials, ensuring a long service life and reduced downtime. ## Description SpeToolTapered Ball Nose End Mill 1/4" X 3" with 0.25mm Ball Nose 5.26Deg for CNC Machine Engraving Carving Bits H-Si Coated ## Features - Tapered angle Ball Nose End Mill / Cone Cutters - 1/4Inch Shank Diameter, 2 Flutes, H-Si Coated - Ball Raidus: 0.25mm, Flute Length:1-1/4 Inch, Overall Length: 3 Inch, Single Side Angel: 5.2Deg - For CNC,Engraving machine.Suitable: Acrylic, MDF, Hardwood, Carbon steel,alloy steel,inconel,stainless steel,titanium alloy etc - Suitable Material: 55HRC, Long service life, Decreasing the times of changing cutters,Saving production time ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07B942PQL | | Best Sellers Rank | #55,159 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #9 in Ball Nose End Mills | | Brand Name | SpeTool | | Corner Radius | 0.5 Millimeters | | Customer Reviews | 4.6 out of 5 stars 211 Reviews | | Cut Type | Center Cutting | | Cutting Diameter | 0.5 Millimeters | | Cutting Length | 1-1/4 Inches | | End Cut Type | Ball End | | Finish Type | AlTiN | | Finish Types | AlTiN | | Helix Angle | 3 Degrees | | Item Dimensions L x W | 3"L x 0.25"W | | Item Weight | 0.02 Kilograms | | Manufacturer | SpeTool | | Number of Cutting Edges | 2 | | Number of Flutes | 2 | | Shape | Round | | Size | D=0.5MM | | Size Name | D=0.5MM | | Tolerance Held | standard | | Unit Count | 1.0 Count | ## Product Details - **Cutting Diameter:** 0.5 Millimeters - **Cutting Length:** 1-1/4 Inches - **Finish Type:** AlTiN - **Number of Flutes:** 2 - **Size:** D=0.5MM ## Images ![Tapered Ball Nose End Mill 1/4" X 3" with 0.25mm Ball Nose 5.26Deg for CNC Machine Engraving Carving Bits H-Si Coated - Image 1](https://m.media-amazon.com/images/I/510HW79cfzL.jpg) ## Available Options This product comes in different **Item Package Quantity** options. ## Questions & Answers **Q: How does h-si coating compare to ticn? google doesn't give much info on h-si, is why i ask.** A: I've been using this cutter on brass and Aluminum with good success. The coating is not as good as say TiAlN but still very good on sticky material like Al. **Q: Typical speed and feeds for wood?** A: Yeah, router rpm speed of 18000 or so. Find the feed rate and depth that works best with your wood. **Q: is it up cut?** A: Yes it is **Q: Are these made in china or usa** A: China ## Customer Reviews ### ⭐⭐⭐⭐⭐ So far, so good! *by T***A on Reviewed in Canada on 3 July 2023* Extremely sharp! ### ⭐ Bit is off center *by S***N on Reviewed in the United States on 4 September 2023* I bought this a while back and put it aside for a proper project. Well, that was tonight and I noticed that while rotating, the tip of the bit was slightly off center, and for such a precise bit, that's not acceptable. Quality control, at least on this bit, has failed me. ### ⭐ Junk *by J***E on Reviewed in Canada on 22 April 2023* This is the second time I have tried this bit. Cutting oak with 5% of tip radius for step over. Cuts great for the first few hrs then breaks off the tip. Another project for the trash. Thanks alot. Will never buy another bit here again. ## Frequently Bought Together - SpeTool Tapered Ball Nose End Mill 1/4" X 3" with 0.5mm Tip Diameter(0.25mm Radius) Ball Nose 5.26Deg for CNC Machine Engraving Carving Bits H-Si Coated - SpeTool 1/8 Inch Spiral Downcut Router Bit 1/4 Inch Shank Extra Long 3 Inch with Extra Long Life Coating CNC Carbide Router Wood Bits - SpeTool Tapered Ball Nose Spiral Router Bit 1.0mm Tip Diameter (0.5mm Radius) 4.82 Deg for CNC Milling Engraver Carving Bits --- ## 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/433886200-tapered-ball-nose-end-mill-1-4-x-3-0](https://www.desertcart.us/products/433886200-tapered-ball-nose-end-mill-1-4-x-3-0) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-05-11*