The MILWAUKEE® SHOCKWAVE Impact Duty™ 1" Drive 7/8 to 1-11/16 and 27mm to 42mm Retaining Rings are optimized 7/8" to 1-11/16" and 27mm to 42mm impact sockets when additional socket retention is needed on 1" drive impact wrenches. The convenient one-piece design and flexible rubber material make the installation of the retaining ring hassle-free. It's necessary to use the proper retaining ring for each socket size.

• For use with 1" drive Shockwave Impact Duty™ Sockets
• Retaining Rings available in 4 sizes
• Provides extra security between socket and tool
• Retaining Rings are not intended to bear any load
• Package includes 1 Retaining Ring
• For use with 27mm to 42mm Metric Shockwave Impact Duty™ Sockets
• For use with 7/8" to 1-11/16" SAE Shockwave Impact Duty™ Sockets