The mount is first. Cut a piece off the end of an old handlebar, grind it to match the contour of your frame and cut 2 slots in it top and bottom next to where it will mount to the frame... Then just put 'er in place and tighten the clamp. Trim the excess when you're done. I used a piece of an old rimstrip to protect the frame. Viola! A shifter mount! Next, pick up a 1" pvc cap and a long 1/4"bolt and nut from your local hardware store. The cap should fit right over top of the shifter once you remove the rubber shifter cover... Grind the flats on the bolt just enough so that it will fit between the ridges molded into the shifter. you might have to take a bit off the top of the bolthead as well... drill a hole in the pvc cap near the edge and feed the bolt through. tighten it in place so that the now narrow head of the bolt will fit between those ridges when the cap is slid into place. I used a curved brake washer on the outside to prevent distorting the cap. If it fits too tight, file the head of the bolt a bit... Mine fit perfect! nice and snug... And here is the finished shifter! I had some golf club shaft left over from another project, and fellow club member Spokes found me the perfect shift knob for this project (Thanks Spokes!)...Look for it on my latest stretch.