Specifications:This drill bit is made of high speed steel, which has advantages of high harness, strong toughness, and long service life.It can easily and quickly split various kinds of wood.The groove anti-slip design is suitable for long working hours.Item Name: Drill BitMaterial: High Speed SteelFeatures: Durable, Long Service Life, High HardnessSize Details:Square Shank Power Hammer Drill Bit: Length: 97mm/3.82", Inner Diameter: 32mm/1.26" (Approx.)Round Shank Power Hammer Drill Bit: Length: 97mm/3.82", Inner Diameter: 32mm/1.26" (Approx.)Hex Shank Power Hammer Drill Bit: Length: 97mm/3.82", Inner Diameter: 32mm/1.26" (Approx.)Rhinestone Drill Bit: Length: 120mm/4.72", Inner Diameter: 25mm/0.98", Outer Diameter: 45mm/1.77" (Approx.)Square Shank: Length: 80mm/3.15", Diameter: 25mm/0.98", 9mm/0.35" (Approx.)Round Shank : Length: 80mm/3.15", Diameter: 25mm/0.98", 9mm/0.35" (Approx.)Hex Shank: Length: 80mm/3.15", Diameter: 25mm/0.98", 9mm/0.35" (Approx.)Notes:Due to the light and screen setting difference, the item& 39;s color may be slightly different from the pictures.Please allow slight dimension difference due to different manual measurement.Package Includes:1 x Drill Bit1 x Extension Rod(Others Not Included)