KLUSON® REPLACEMENT STRING RETAINER FOR VINTAGE FENDER® BASS Gold  SKU: KBRG
This is an exact duplicate of the original Fender® round vintage bass string retainer, part number 099-4913-000
 . It is slightly larger than its American Standard® counterpart. Individually packed and includes the mounting screw.

Additional Product Information
Important Specs and Dimensions: 

Disc Diameter = 3/4 in. (19mm) 
Disc Height = 1/4 in. (6.35mm)