The Hendrickson 1.75" Spindle Plug HN Rotary Union Retrofit Kit is designed to provide increased durability and longevity to your rotary union. This retrofit kit is designed to enhance productivity and reduce downtime, while also providing improved safety features. The kit includes a spindle plug, a bearing, a seal, and a spacer, all of which are designed to provide a secure and reliable connection. The kit is easy to install and is compatible with most rotary unions. FleetPride is your First Click in Heavy Duty®.