CNC Milling Chuck Holder Lathe ER20 Black Collet Clamping Nut<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Product Name : Collet Nuts;Model : ER20</li><li>Hole Diameter : 16mm/ 0.63";Thread Diameter : 24mm/0.94"</li><li>Overall Size(Approx.) : 34x 20mm/ 1.3" x 0..8" (D*L);Material : Metal</li><li>Color : Black;Net Weight : 64g</li><li>Package : 1 x Collet Nuts</li></ul></div><img src="http://ecx.images-amazon.com/images/I/41sep6JOVQL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/31RZ6X3DCnL.jpg" noproxy>