The Stainless Works collector filler diamond is a 2-1/2" diameter CNC laser-cut insert crafted from 304 stainless steel for corrosion resistance. Used in 4:1 header configurations, it helps square up primary tubes and prevent leakage inside the collector. Laser-cut for precision and consistent sizing, these filler diamonds are proudly made in the USA to assist in accurate header assembly.
Stainless Works 2.50in Dia Collector Diamond