uxcell 45mm Long 2x1mm Ball Tip Diamond Points Grinding Drill Bit 30 Pcs Product Name : Grinding Diamond Bits;Tip Shape : Ball Shaped Material : Alloy, Diamond;Shank Diameter(Each) : 3mm / 0.12" Each Length : 45mm/ 1.8";Tip Size : 2 x 1mm/ 0.08" x 0.039"(L*D) Color : Silver Tone;Total Weight : 109g Package Content : 30 Pcs x Diamond Mounted Points1 x Plastic Case