4X ER11 A Type Collet Clamping Nut For ER Collet Milling CNC Chuck Holder Lathe. ER11 ER16 5-10mm Collet Block Chuck Collet Holder Spindle Motor Shaft Clamp Bar. ER40 Hex + Square Collet Block Spring Chuck Holder CNC Lathe Milling Engraving.
eBay