4X ER11 A Type Collet Clamping Nut For ER Collet Milling CNC Chuck Holder Lathe. 5Pcs ER16-A type Collet Clamping Nut CNC Milling Collet Chuck Holder Lathe Tools. ER11 ER16 5-10mm Collet Block Chuck Collet Holder Spindle Motor Shaft Clamp Bar.
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