5pcs Titanium HSS Drill Bit Hole Saw Set Metalworking Cutter Tools 16-30mm Features: 1. Hole saw is made from good quality high speed steel,durable and practical 2. Provide 5 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 Ddiameter 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: High speed steel Size: 16mm, 18.5mm, 20mm, 25mm, 30mm Color: As the picture show Quantity: 5pcs Note: 1. Please allow 1-5mm 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 1 x Hex Key