CRAFTSMAN Mechanics Tool Set, 1/4 Inch Drive, 20 Piece, 90-Tooth (CMMT12108)

MATERIAL AND PROCESSOur concrete hole saw set is made of tungsten steel and carbide, sturdy enough to drill through hard stone and concrete. Each hole saw is equipped with ventilation holes,free to remove dust generated during the drilling process,and effectively improve the efficiency of drilling. | 10 IN ONE7pcs hole saw diameter: 1-3/16(30mm), 1-9/16(40mm), 2"(50mm), 2-9/16 (65mm), 3-1/8" (80mm), 3-15/16"(100mm), 4-5/16"(110mm), 1 x SDS PLUS Shank(110mm/4-5/16"), 1 x SDS PLUS Shank(300mm/11.81"), 1 x SDS Max Shank(300mm/11.81"). | Wide ApplicationConcrete hole saw kit easily drills through most common wall materials ,as cement ,brick, concrete, adobe, and stone etc. Widely used for drilling walls or install tubing, water pipes, exhaust hoses and more. | ConsiderationsEquipped with a hole saw drill bit, suitable for all major manufacturers' SDS Plus tools, Adding coolant during continuous high-speed drilling, It can prevent the drill bit from burning or breaking, Increase the service life of the product. | Purchase with ConfidenceWe are committed to providing you with good products and excellent service. If you find any problems when you use it, pls contact with us. We would try our best to assist you and ensure your satisfaction.