uxcell 30 Pcs 3mm Shank 1.5mm Dia Round Ball Point Grinding Diamond Bits Product Name : Diamond Mounted Point;Shape : Ball Shape Tip;Material : Alloy Shank Diameter(Each) : 3mm / 0.12";Total Length(Each) : 45mm / 1.78" Diamond Coated Length : 1mm/ 0.39";Tip Dia : 1.5mm/ 0.059" Case Size : 145 x 61 x 19mm / 5.7" x 2.4" x 0.73"(L*W*T);Main Color : Silver Tone Total Weight : 66g;Package Content : 30 Pcs x Diamond Mounted Point1 x Plastic Case