Extension shafts for Ferrograph RTS and others

I have  some of these couplers and shaft extenders, they was used in the RTS test unit bt can be used for many many other things

I have 1/4 inch ones in say 3-5 inches approx and some 1/8th inch ones.

let me know what you need and I will tell you exactly, I guess I could make these if someone wanted something else.

Price for 1 of your choice