uxcell 30 Pcs 3mm Abrading Head Cylindrical Grinding Diamond Bits Set Product Name : Grinding Diamond Bits Set;Shape : Cylindrical Point;Material : Alloy Shank Diameter(Each) : 3mm / 0.12";Each Length : 45mm / 1.77" Diamond Coated Length : 10mm/ 0.39";Tip Dia : 3mm/ 0.12" Case Size : 143 x 60 x 20mm / 5.6" x 2.4" x 0.8"(L*W*T);Color : Silver Tone Total Weight : 120g;Package Content : 30 Pcs x Grinding Bits,1 x Plastic Case