Features Perfect for installing locks, knobs in doors and cabinets or drilling larger diameter holes through desks etc Can be used to make large holes in thin steel sheet, aluminum alloy and other soft metal sheet Provide 11 Kinds of size HSS hole saw, meet your different Needs It removes material from the edge of the hole, cutting out an disc of material Hole saw is made from good quality Alloy and HSS,durable and practical Features: 1. Hole saw is made from good quality Alloy and HSS,durable and practical 2. Provide 11 Kinds of size HSS hole saw, meet your different Needs 3. It removes material from the edge of the hole, cutting out an disc of material 4. Perfect for installing locks, knobs in doors and cabinets or drilling larger diameter holes through desks etc 5. Can be used to make large holes in thin steel sheet, aluminum alloy and other soft metal sheet Specifications: Material: Alloy Tip + HSS Body Size: 20mm,25mm,30mm,40mm,50mm Color: As the picture show Quantity: 5pcs Note: 1. Please allow 1-3mm errors due to manual measurement 2. Item color displayed in photos may be showing slightly different on your computer monitor since monitors are not calibrated same Package Includes: 5 x Hole Saws Package List