TOOGOO(R) 4.5mm x 180mm Lapidary er Round Rat Tail Diamond Needle Files 2 Pcs Product Name : Round Diamond Files;Material : Diamond, Plastic Shank Diameter : 4.5mm / 0.177";Total Length : 180mm / 7.08" Main Color : Red, Silver Tone Net Weight : 48g Package Content : 2 x Round Diamond Needle Files