uxcell 30pcs 3mm Cylindrical Nose 3mm Alloy Shank Grinding Buffing Bits Product Name : Mounted Point;Tip Shaped : Cylinder Material : Alloy, Diamond;Shank Diameter(Each) : 3mm / 0.1" Total Length(Each) : 45mm / 1.8";Diamond Coated Length : 10mm/ 0.4" Head Max. Diameter : 3mm/ 0.1";Main Color : Silver Tone Total Weight : 111g;Package Conten : 30 x Diamond Mounted Points,1 x Plastic Case