Specifications:

• Designation: ER20-3MM AAA 0.005

• AAA grade high precision elastic chuck ER20, ER collet lock

• Diameter : 21mm
  

• Height : 31.5mm
  

• With nut : ER20A

• Package Includes: A Chuck (not include With nut)

Features:

• Mn manganese-titanium hardened steel is made with precision, hardened, shock-resistant and durable  
• Good hardenability, can withstand multiple impacts, strong and durable, long life  
• The hollow knife groove of the collet is ground  
• The surface is nickel-plated, with high hardness and good wear resistance  
• The tail of the clamp is exquisitely made, and the outer circle and end surface are ground multiple times to achieve a mirror effect

ER20-3MM AAA High Precision Elastic Chuck – Superior Durability and Precision for Precision Machining

ER20-3MM High Precision Chuck – Shock-Resistant, Nickel-Plated Surface

Maximize Precision and Efficiency with ER20-3MM High Precision Chuck – Hardened Steel, Mirror-Finish, ER20A Nut Included