ER11 ER16 ER20 Spring Collet Chuck Set CNC Milling Lathe Tool for Engraving Machine

Description: Spring Collet Chuck Set ER11 ER16 ER20 CNC Milling Lathe Tool 10pcs/13pcs Engraving Machine.     Specifications: Product Name:Spring Collet Set.  Material:Steel.  Type:   Type A: ER11-13pcs.  Type B: ER20-13pcs.  Type C: ER16-10pcs.  Quantity: 10 Pcs × Spring Collet Set.  13 Pcs × Spring Collet Set.     Features: - It adopts high-carbon bearing steel imported from Japan, which has tough hardness and toughness, good elasticity and long service life.  - -187° super long cryogenic treatment reduces residual stress and significantly improves wear resistance.  - ≥100h super long heat aging treatment.  - The unique chamfer will not damage the nut or the handle.     Package Included: 1 x Spring Collet Set