8-1/4 Inch Hole Saw Bit 8.25" HSS Bi-Metal Cutter for Wood Metal Drywall Sheetrock Plastic with 1.5 Inch Deep

Description

HLOFIZI 8-1/4 Inch Hole Saw for Wood Metal Drywall Sheetrock PlasticThis 8.25 hole saw is constructed with heavy duty M42 high speed steel cutting edges for tougher, longer lasting performance. Features include variable teeth for less vibration, a durable finish that won’t rust. With this powerful hole saw set, you’ll be able to drill large diameter holes quickly and efficiently. Recommend: Metal Sheet, Wood, Drywall Ceiling, Sheetrock, Fiberglass, Plastic Not Recommend: Old Lath and Plaster ceiling, Stucco, Cement Board, Backer Boards, Brick Most standard (bi-metal) hole saw is not suitable for drilling through old plaster and lath ceiling. The teeth may be dull soon after cutting 2 or 3 holes, when we drill overspeed on plaster. Carbide hole saw can do the job if you need to cutting lots of holes on old plaster and lath. Here is some tips for installing recessed lighting 1. Set your drill to low speed 2. Start your cut in reverse a groove, and we should go slow to prevent skipping 3. Then switch to running forward to clear out the material slowly 4. Overspeed will make teeth dull soon 8-1/4 Inch Hole Saw Operating Speeds(RPM): Metal Sheet: 40 RPM Drywall, Sheetrock: 80 - 100 PRM Wood: 55 RPM Aluminum: 65 RPM Please don’t overspeed when cut Material:M42 HSS, Bi-metal Package Included:1 pc x 8-1/4 inch Hole Saw 1 pc x hole saw arbor fit 1/2 Inch chuck 3 pcs x high-speed steel pilot drills 1 x Allen wrench1 x Spring 100% SATISFACTION GURANTEED: If you are dissatisfied with HLOFIZI 8-1/4 inch bi-metal hole saws for any reason, please contact us for quick replacement, or full refund within 90 days.