uxcell 30 Pcs 3mm Tapered Nose Alloy Shank Diamond Mounted Point Buffing Bits Product Name : Diamond Mounted Point;Material : Alloy, Diamond Shank Diameter(Each) : 3mm/ 0.12";Total Length(Each) : 45mm / 1.8" Diamond Coated Length : 17mm/ 0.7";Head Max. Diameter : 3mm/ 0.12" Main Color : Silver Tone;Total Weight : 80g Package Conten : 30 x Diamond Mounted Points