Multifunctional Drill Bits Wall Ceramic Glass Punching Hole 5pcs Working Set Feature Made of fine quality material low resistance high hardness improving work efficiency. The design of triangle shank makes the clamping more tight and does not slip. U-shaped spiral groove is smooth and flat and the drilling is smoother. Strong toughness and wear resistance can be installed in electric drills. Provides smooth and accurate drilling in tile glass brick wall wood and so on. Specifications: Material: alloy Color: red+silver 6-12mm 5pcs cutting diameter: 6mm 6mm 8mm 10mm 12mm Total length: 6mm cutting diameter: 100mm / 3.9in 8mm cutting diameter: 110mm / 4.3in 10mm cutting diameter: 120mm / 4.7in 12mm cutting diameter: 120mm / 4.7in Working length: 6mm cutting diameter: 55mm / 2.2in 8mm cutting diameter: 66mm / 2.6in 10mm cutting diameter: 70mm / 2.8in 12mm cutting diameter: 75mm / 3.0in Shank diameter: 6mm cutting diameter: 4.5mm / 0.2in 8mm cutting diameter: 6mm / 0.2in 10mm cutting diameter: 7mm / 0.3in 12mm cutting diameter: 9mm / 0.4in Item weight: 6mm cutting diameter: 11g / 0.4ounce 8mm cutting diameter: 27g / 1.0ounce 10mm cutting diameter: 34g / 1.2ounce 12mm cutting diameter: 51g / 1.8ounce Package Contents: 7PC(3 4 5 6 8 10 12）mm Drill Bit
