Triangular Set Tiles Ceramic Glass Opener 4mm And 6mm

Description: Made of cemented carbide hard tough and durable. 2 sizes for you to choice meet the demands of various ocassions. Suitable for opening a hole on ceramic glass glass granite brick wall ceramic tile and other brittle material. The drill bits can be installed on the electric hand drill drill machine. For security the user should wear protecting glasses or protecting mask when using the drill bits. Specification: Drill material: hard alloy / cemented carbide Shank material: alloy Color: Black(Drill) and Silver(Shank) Hole Diameter Size: 4mm 6mm(0.157 inch 0.236 inch) 4mm: Total lenght: Approx. 60mm/ 2.36 inch working length: Approx. 8mm/ 0.315 inch. 6mm: Total lenght: Approx. 70mm/ 2.76 inch working length: Approx. 10mm/ 0 Package Includes: 10pcs Triangular Drill Bit (each size 5Pcs)