Like to utilize different annular booster inserts in your 4150 application?
Here is a tool that simplifies the process of changing the inserts while supporting the boosters to reduce stress on the banjo.
These unique and very easy to use tools are on sale, while supplies last
Come complete with main section support bracket and 2 extraction rods:
(1) for .500" id inserts
(1) for .600" id inserts