13pcs Precision R8 Collets Set 1/8 - 7/8" Mill Chuck Holder for Bridgeport .0006 Material:65Mn
<p><b>Item description:</b></p> <b>Size:</b> 1/8" 3/16" 1/4" 5/16" 3/8" 7/16" 1/2" 9/16" 5/8" 11/16" 3/4" 13/16" 7/8"<br> <b>Accuracy</b> .0006" TIR<br> <b>Drawbar Thread:</b> 7/16"-20<br> <b>Material:</b>65Mn<br> <b>Hardness:</b>Clamping part HRC 55-60 elastic part HRC 40-45<br> <b>Applicable:</b>This unit is applicable to all sorts of milling machines,which spindle taper hole is R8.