Gray Silver Tone 25mm Dia Carbide Tipped Alloy Hinge Boring Drill Bit Product Name : Hinge Boring Bit;Suitable for : Alloy Cutting Material : Metal, Carbide;Color : Silver Tone, Gray Drilling Diameter : 25mm / 1";Shank Diameter : 9mm / 0.35" Total Length : 126mm / 5";Net Weight : 87g Package Content : 1 x Hinge Boring Bit1 x Plastic Holder Box