Corded Drills, Screwdrivers -6 Sizes Triangular Bits Set 6mm Glass Glass Window Opener Tiles Highlights Generic Brand 6 Sizes Triangular Bits Set 6mm Glass Glass Window Opener Tiles Description: Made of Carbide cemented, hard, hard and durable. 6 sizes for you to choose, meet the requirements of different occasions. Suitable for opening a hole on ceramic glass, glass, granite, brick wall, ceramic tile and other fragile materials. Drill bits can be installed on the electric drill rig, drill rig. For safety, the user should wear protective goggles or face shield when using drill bits. specification: Drill Material: Hard Alloy/Cemented Carbide Shank Material: High Load Alloy Color: Black (Drill) and Silver (Shank) Hole Diameter Size: 3mm, 4mm, 5mm, 6mm, 8mm, 10mm (0.118 inch , 0.157inch, 0.197inch, 0.236inch, 0.315inch, 0.394inch) 3mm: Total length: approx. 60mm/2.36inch, working length: approx. 8mm / 0.315 inch. 4mm: Total length: approx. 60mm/2.36inch, working length: approx. 8mm / 0.315 inch. 5mm: Total length: approx. 65mm/2.56inch, working length: approx. 10mm / 0.394 inch. 6mm: Total length: approx. 70mm/2.76inch, working length: approx. 10mm / 0.394 inch. 8mm: Total length: approx. 70mm/2.76inch, working length: approx. 15mm / 0.591 inch. 10mm: Total length: approx. 80mm / 3.15inch, working length: approx. 18mm / 0.709 inch. 5 pieces (of the same size) in 1 set Package includes: 1 Set of Triangular Drill Bit (5Pcs)