uxcell a15060800ux0208 C12-ER11A-100L Collet Chuck Holder Straight CNC Milling Extension Rod for CNC Lathe Milling Tool Share 0 See on Amazon Product Name : Straight Collet Chuck;Model : C12-ER11A-100L;Fit for : ER11 Collet Material : Metal;Color : Silver Tone , Black;Shank Dia : 12mm/ 0.47″ Shank Length : 100mm/ 4″;Total Length : 125mm/5″ End Thread Hole Dia : 9mm/ 0.35″;Overall Size : 125 x 19mm / 5″ x 0.75″ (L*Max.D) Net Weight : 90g;Package Content : 1 x Straight Collet Chuck; Mainly used on milling machines, grinding machines, lathes, and small machine tools