Uxcell 2mm Ball Head 3mm Shank Diamond Bits Grinding Tool, 30-Piece Product Name : Grinding Diamond Burr Bits Set;Shape : Ball Shape Tip;Material : Alloy Shank Diameter(Each) : 3mm / 0.12inch;Total Length(Each) : 45mm / 1.77inch Diamond Coated Length : 2mm/ 0.078inch;Tip Dia : 2mm/ 0.078inch Case Size : 145 x 61 x 19mm / 5.7inch x 2.4inch x 0.73inch(LWT);Main Color : Silver Tone Total Weight : 68g;Package Content : 30 Pcs x Grinding Burr Bits1 x Plastic Case