--- product_id: 295126815 title: "Calculated Industries 8105 Blind Mark Drywall Electrical Box Locator Tool" brand: "calculated industries" price: "$105.78" currency: USD in_stock: true reviews_count: 5 category: "Calculated Industries" url: https://www.desertcart.us/products/295126815-calculated-industries-8105-blind-mark-drywall-electrical-box-locator-tool store_origin: US region: United States of America --- # No measuring, zero errors 3 powerful rare-earth magnets Cutouts done 2x faster Calculated Industries 8105 Blind Mark Drywall Electrical Box Locator Tool **Brand:** calculated industries **Price:** $105.78 **Availability:** ✅ In Stock ## Summary > 🧰 Nail every cutout like a pro—no measuring, no mistakes, just flawless drywall every time! ## Quick Answers - **What is this?** Calculated Industries 8105 Blind Mark Drywall Electrical Box Locator Tool by calculated industries - **How much does it cost?** $105.78 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/295126815-calculated-industries-8105-blind-mark-drywall-electrical-box-locator-tool) ## Best For - calculated industries enthusiasts ## Why This Product - Trusted calculated industries brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **All-in-One Pro Kit:** Includes 3 target magnets, locator, and rugged case for organized, on-the-go use. - • **Double Your Efficiency:** Complete drywall cutouts twice as fast with zero measuring or rework. - • **Lift Less, Work Smarter:** Install drywall once, mark, and cut—cutting fatigue and injury risk in half. - • **Precision Magnet Alignment:** Rare-earth magnets snap perfectly to locate boxes behind drywall—no guesswork. - • **Versatile Material Compatibility:** Works flawlessly on drywall, plywood, paneling, cement board, and more. ## Overview The Calculated Industries 8105 Blind Mark Drywall Electrical Box Locator Tool uses powerful rare-earth magnets to locate electrical boxes behind drywall and other materials, enabling perfect cutouts twice as fast without measuring. Designed to reduce lifting and eliminate errors, this professional-grade kit includes three target magnets, a locator, and a durable carrying case, making drywall installation faster, easier, and more precise. ## Description Now Find Mark Electrical Boxes for Cutouts TWICE as Fast ; With NO Measuring! The Blind Mark electrical outlet box locator kit uses powerful rare-earth magnets to help you accurately locate and mark electrical outlet access holes for cutouts during installation of drywall, paneling and other materials, all with NO measuring required! SAVE A TON OF TIME INSTALLING DRYWALL ; with Blind Mark you simply place the targets in the outlet boxes, tack the drywall into place, use the locator to find the targets behind the drywall, mark the location then cut the hole. TWICE AS ACCURATE ; no more mis-measured and mis-cut drywall openings or having to patch mis-cuts or need to buy oversize plate covers. With Blind Mark you ;ll cut perfect openings every time. HANG IT ONCE, CUT IT RIGHT ; while other drywall locator methods require you to lift and lower heavy drywall sheets multiple times to mark, cut, then install, with Blind Mark you simply put it up once, cut the hole and you're done. HALF THE LIFTING ; because you only lift the drywall once to install it you not only finish in half the time but with much less fatigue or chance of injury or damage to fragile drywall corners. MULTIPLE MATERIALS ; works on drywall, sheetrock, plywood, paneling, particle board, laminated flooring, Masonite, exterior siding, cement board, tile backsplashes, slate and more! THIS KIT INCLUDES ; 3 targets with super strong magnets enable you to find multiple boxes at once for even greater time savings. Rugged storage case keeps the high quality plastic targets and locator organized and protected between projects. Why make drywall installation harder than it has to be? Let Blind Mark take the guesswork and the grunt work out of finding and cutting hidden electrical boxes. Click the Add to Cart button now! Copyright 2021 Calculated Industries. All rights reserved. Review: Not for Australia / New Zealand Review: Très bon produit. - J'ai pas le compas dans l'oeuil et mes ouvertures dans la plaque au plâtre était plus souvent qu'autrement aproximatives. On rénove notre sous sol et on gagne énormément de temp avec cet outil. c'est incroyablement simple et efficace. Je recommande a tous castor bricolleur. Ceci dit, même si c'est conçu pour des boitier en plastique ça fonctionne aussi avec les boitier en metal. ## Features - Perfect Drywall Cutouts You Can Be Proud Of In Half The Time With No Measuring! Powerful Rare-Earth Magnets That Find Each Other Through Drywall, Eliminates The Need For Time Consuming, Error-Prone Measurements - No More Mis-Cut Boxes – Blind Mark Makes Locating And Marking Outlet Boxes Error-Free; Just Point The Arrows On The Target And Locator In The Same Direction; Powerful Magnets Accurately Align For Perfect Cutouts In Less Time With Less Lifting And No Measuring - Get Professional Results You Can Be Proud Of (Even If It’S Your First Time Hanging Drywall) With Foolproof And Trustworthy Patented Technology That Snaps Into Place; It Shows You Exactly Where To Cut - Pays For Itself By Avoiding Costly And Embarrassing Measuring Errors; Enables You To Confidently Install Drywall Easier; Assists You In Finishing Jobs More Quickly Without A Need For Patches Or Repairs ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00YX8KZGO | | Best Sellers Rank | #50,747 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #160 in Tool Boxes | | Brand | Calculated Industries | | Brand Name | Calculated Industries | | Color | Multi | | Colour | Multi | | Customer Reviews | 4.6 out of 5 stars 3,236 Reviews | | Included Components | Includes 3 target magnets, 1 target locator magnet, and a rugged carrying case | | Is Electric | Yes | | Item Type Name | Calculated Industries 8105 Blind Mark Drywall Electrical Box Cutout Tool – Powerful Rare-Earth Magnetic Targets (3) and Locator Kit | | Item Weight | 1 Pounds | | Item weight | 1 Pounds | | Manufacturer | Calculated Industries | | Manufacturer Part Number | 8105 | | Material | Hard Plastic, Metal | | Material Type | Hard Plastic, Metal | | Model Number | 8105 | | Number of Pieces | 1 | | Number of pieces | 1 | | Power Source | Hand Powered | | Style | Modern | | Style Name | Modern | | UPC | 854979001007 785577173264 723434515680 785533856187 796084335670 733353688501 787721523956 098584001735 | | Unit Count | 1 Count | ## Product Details - **Brand:** Calculated Industries - **Item weight:** 454 g - **Material:** Hard Plastic, Metal - **Number of pieces:** 1 - **Style:** Modern ## Images ![Calculated Industries 8105 Blind Mark Drywall Electrical Box Locator Tool - Image 1](https://m.media-amazon.com/images/I/717rP7XTW3L.jpg) ## Questions & Answers **Q: I'm confused. The gang box sticks out a half inch from the studs. How do you install the drywall without first cutting the hole?** A: the box is only 1/4inch past studs. not 1/2. the drywall will just float over the box. so when you hang the drywall, only use 3 or 4 screws- just enough to hold it in place. then use the magnet to find your box, and cut it out. then finish screwing in the drywall. This tool works great. i just did an entire house with absolutly zero problems **Q: Will it work through osb** A: On the back of the box it says the following:"Works on drywall, plywood, particle board, laminated flooring, Masonite, exterior siding, cement board, tile, and slate."Thanks,General Tool **Q: What tool are you using to cut the sheet rock i feel like a dremel would cut right through the metal wire being used to hold the magnet to the box** A: Commercial drywallers use drywall routers/Rotozips(large Dremels spinning at 9000rpm). But you can use anything. You will not come in contact with the inside of the box, maybe the tabs of the outside of box. The outside marker magnet is larger than the inside box magnet and spring tabs. If you are worried about even touching the outside tabs of an electrical box, set your depth on the bit to that of the drywall. **Q: Does the electrical box have to be empty** A: With this kit, yes the box would need to be empty, but they also make something called a plug mark that plugs into an existing wall outlet. Of course that doesn't work for light switches. But there is always lipstick for those.http://www.amazon.com/gp/product/B00XUY9FB8?psc=1&redirect=true&ref_=od_aui_detailpages02 ## Customer Reviews ### ⭐⭐ Not for Australia / New Zealand *by M***T on 22 August 2020* ### ⭐⭐⭐⭐⭐ Très bon produit. *by M***N on 21 June 2025* J'ai pas le compas dans l'oeuil et mes ouvertures dans la plaque au plâtre était plus souvent qu'autrement aproximatives. On rénove notre sous sol et on gagne énormément de temp avec cet outil. c'est incroyablement simple et efficace. Je recommande a tous castor bricolleur. Ceci dit, même si c'est conçu pour des boitier en plastique ça fonctionne aussi avec les boitier en metal. ### ⭐⭐⭐⭐⭐ Great tool for easy cutouts *by T***Z on 4 November 2025* ## Frequently Bought Together - Calculated Industries 8105 Blind Mark Drywall Electrical Box Locator Tool – Powerful Rare-Earth Magnetic Targets (3) and Locator Kit - Calculated Industries 8115 Multi Mark Drywall Cutout Locator Tool – Powerful Rare-Earth Magnetic Targets (2) and Locator Kit - Upgrade 2 Pcs Square Slot Cutter Compatible for Dewalt 20V & Milwukee M18 Oscillating Multi-Tool to Cut-in Single Gang Wall Boxes,Outlet Cutter for Drywall,Efficient Carving Tool,Black --- ## 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/295126815-calculated-industries-8105-blind-mark-drywall-electrical-box-locator-tool](https://www.desertcart.us/products/295126815-calculated-industries-8105-blind-mark-drywall-electrical-box-locator-tool) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-05-18*