KRONTEC RFC NIPPLE WELDING RING
This is used to fit the car side "Nipple" such as RFC-88-N to allow you to weld it into a dump churn.
You also need Oring PART# RFCWELDNIPRINGORING and 6 mounting screws, OR you could simply order the RFC-88-N-DCK which has all of the parts needed in one KIT!