It's made of delrin. Slotted on the bottom side you can't see so it slips over the cable, counterbored on the entrance side for the cable sheath to sit in, stepped on the exit side to fit in the throttle housing. A hole thru for the cable itself to go thru.
The problem I had was that the cable entered the housing at an angle, & rubbed on everything along the way. This gives it a straight shot in, & if anything the cable only rubs on slippery delrin.
If you have a sticky throttle problem, try holding the cable so as to give it a straight shot in, you might be surprised. Mine now feels just like a MC throttle.
I made it on my mini lathe but it could easily be made with a drill press & hand tools.
:grind: