The is a 3-D printed reproduction of the 24 pin "Molex-style" single sided edge connector. This can replace the A1-J5, or the A3-J1 connector housing on the Gottlieb System 1 interconnect harness. A properly crimped pin makes that satisfying *click* when inserted into this housing. Where original, NOS Molex parts are becoming hard to find, this is good substitute for a reasonable cost.