Kata 30Pcs Multi-Function Wood Drill Bits Set Hole Saw Kit Set With 3/4"-6", Pvc 13-Piece Hole 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), 3" (76 mm), 3-1/2" (89 mm), 4" (102 mm), 5" (127 mm), 6"(152 mm) Accessories: 2 mandrels, 2 drill bits, 1 hex key, 1 installation plate, 4 pc wood countersink drill bits 78-84-90-92mm, 4 pc wood flat bits 1/2"-5/8"-3/4"-1", 4 pc Carbide forstner bits set 20 mm-22 mm-25 mm-35 mm Durable Material: Heat treated carbon steel hole saw blade, black coating with oil, rust-proof and wear-resistant; HSS and hard alloy material drill bits make woodworking more efficient Wide Application: Upgraded design with ultra sharp serrations for faster and cleaner cutting, which is ideal for softwood, plywood, plastic plate, plasterboard and thin PVC board. Great for tasks of cutting multiple hole sizes from small to large in desk surfaces, doors and furniture Solid Storage Case: The set comes with a customized heavy duty case for portability. Designated slots in the case keep every piece in place. Improve work efficiency Warmly Tips: Can be used with a standard electric drill, impact drill, if you need very precise holes, please use a saw machine, not suit for hard metal, hard wood or density board. Not for use for cutting depths beyond about 1"(25 mm)