uxcell Carbide Tip 30mm Diameter Wood Cutting Hinge Boring Bit for Carpenter Product Name : Hinge Boring Bit;Suitable for : Wood Cutting Drilling Diameter : 30mm / 1.2";Shank Diameter : 7.7mm / 0.3" Total Length : 79mm / 3.1";Material : Metal, Carbide Color : Blue, Silver Tone;Weight : 58g Package Content : 1 x Hinge Boring Bit