uxcell 3mm Clamping Dia for Dremel Rotary Tool Chuck Collet Silver Tone 5 Pcs Product Name : for Dremel Chuck Collet;Clamping Diameter : 3mm/ 0.12" Shank Diameter : 4.3mm / 0.17";Overall Size : 6x 18mm / 0.24" x 0.7"(Max.D * L) Material : Metal;Color : Silver Tone Net Weight : 8g Package Content : 5 x for Dremel Chuck Collet