Oversized 9mm insert ensures secure fit for Topper Y17 hull
9mm outer diameter at serrated part for precise compatibility
Durable brass construction for long-lasting performance
Easy installation with reference guide available
Summarized by Shop
Single oversize insert for the TopperĀ® hull.
9mm OD at the serrated part of the insert bush.
How to fit the Y17 insert can be found HERE
TopperĀ® is a registered trademark of Ian Proctor Designs Limited.