This wiring bulkhead is designed for Holley Terminator X & X-Max systems. It's easy to install, with just one 2.75" hole required.
These are USA made with a 3D printer, out of high temp material which is also chemical resistant.
2-hole bulkheads have (1) 19mm hole and (1) 28mm hole.
3-hole bulkheads have (1) 13mm hole, (1) 19mm hole, and (1) 28mm hole.