About This Includes: 8 pcs Saw blades 3/4" (19 mm), 7/8" (22 mm), 1-1/8" (29 mm), 1-1/4" (32 mm), 1-1/2" (38 mm), 1-3/4" (44 mm), 2" (51 mm), 2-1/2" (64 mm), 2 pcs mandrels and 1 pcs hex key Safety and Durable: Heat-treated high carbon steel with black coating surface, allows for a more aggressive cut, anti-rust and durable Fast and Clean: Smoothly finish, sharp teeth reduces resistance during cutting and allows fast and clean cuts Wide Application: Suitable for soft wood, thin PVC panel and thin plywood, but not for metal and hard wood. Excellent tool for home DIY-easy to switch different cutting sizes Warmly Tips: Can be used with a standard electric drill, impact drill, If you need very precise holes, please use a saw machine. Not for use for cutting depths beyond about 1"(25 mm) Overview Material : High Carbon Steel Brand : KATA Color : 12PCS Style : Compact Item Weight : 0.44 Kilograms Compatible Devices : Electric Drill, Impact Drill Unit Count : 12.0 Count UPC : 602835319861 Number of Items : 12 Set Name : 12PCS