Feature: 1. 【10 Sizes to Meet Most needs】10pcs hole cutters with dimensions 16mm(5/8\"), 18mm(11/16\"), 20mm(3/4\"), 22mm(7/8\"), 25mm(1\"), 30mm(1-1/8\"), 35mm(1-3/8\"), 45mm(1-3/4\"), 50mm(2\"), 53mm(2-1/8\"),10 pcs pilot drill bits and 1 pc hex key.A variety of sizes to meet your different needs. 2. 【High-quality Alloy and Carbide】This hole saw is made from high-quality alloy and carbide tipped cutters, ensures its high hardness, rust proof and sturdy.The high-end carbide technology and optimized tooth geometry make hole saws low resistance and quick drilling. 3. 【Wide Application】These Hole Saw Sets provide quick and high-precise cuts into metal material, they are Industrial grade metal drilling hole cutter for stainless steel, metal, iron,plastics, aluminum, resin,etc. 4. 【Easy to Use】The cutter head adopts a three-edged design to reduce chipping,TCT carbide steel tooth for quick cutting of neat and smooth round holes. They are suitable for hand held electric drill, stand motor-driven drilling machine and mobile ribbon type magnetism drilling machine. Specification: Features: 【10 Sizes to Meet Most needs】10pcs hole cutters with dimensions 16mm(5/8"), 18mm(11/16"), 20mm(3/4"), 22mm(7/8"), 25mm(1"), 30mm(1-1/8"), 35mm(1-3/8"), 45mm(1-3/4"), 50mm(2"), 53mm(2-1/8"),10 pcs pilot drill bits and 1 pc hex key.A variety of sizes to meet your different needs. 【High-quality Alloy and Carbide】This hole saw is made from high-quality alloy and carbide tipped cutters, ensures its high hardness, rust proof and sturdy.The high-end carbide technology and optimized tooth geometry make hole saws low resistance and quick drilling. 【Wide Application】These Hole Saw Sets provide quick and high-precise cuts into metal material, they are Industrial grade metal drilling hole cutter for stainless steel, metal, iron,plastics, aluminum, resin,etc. 【Easy to Use】The cutter head adopts a three-edged design to reduce chipping,TCT carbide steel tooth for quick cutting of neat and smooth round holes. They are suitable for hand held electric drill, stand motor-driven drilling machine and mobile ribbon type magnetism drilling machine. Note: 1.Remember to add coolant during continuous high-speed drilling. 2.Dimensions are manually measured, there may be a small error, please refer to the actual product you received. Specifications: Color:Silver Material: Alloy + Carbide Cutter Size: 16mm(5/8"),18mm(11/16"),20mm(3/4"),22mm(7/8"),25mm(1"),30mm(1-1/8"),35mm(1-3/8"),45mm(1-3/4"),50mm(2"),53mm(2-1/8") Item Size: 90*16mm-90*53mm/3.5*0.6-3.5*2.1in Item Weight: 1.5kg/52.9oz Package Size: 205*155*115mm/8.1*6.1*4.5in Package Weight: 2kg/70.5oz Packing List: 10 * Cutter 1 * Hexagonal wrench 1 * Storage box Package List: 10 * Cutter 1 * Hexagonal wrench 1 * Storage box