1 1/4"-12 Breech Lock Update Kit. Convert your green or red press to allow use of Lee's Breech Lock quick-change bushing feature.
Kit includes:
1 1/4"-12 breech lock adapter
Spline drive lock-ring eliminator
Lock-ring wrench
Compatible with the following presses:
Lee Precision Classic Cast®
Hornady® Iron®
Hornady® Classic™ / Lock-N-Load®
RCBS Rock Chucker® Supreme
Redding Big Boss®
Redding® 700 Ultramag
..and more (verify your removable press bushing/adapter size is 1 1/4"-12)