I wanted a straight shaft for my excallibur, but I didn't want to spend the $100.00 for it, so being a person that makes most of my own stuff, here what I did. I went to walmart, and bought an alluminum extention for a paint roller, the tubing is just the right size for the upper shaft, I cut it to size. It cost $10.00 and went to the bike department, and bought two handles for mounting on a racing bike, $7.00 and then to make the arm cuff I bought some 4 inch white pvc cuppler and sawed it about 3/4. I bought some nylon bolts and wing nuts, a couple of end caps from the hardwhear department. total about $20.00 and an hours work. Heres pictures of the finished product. Grubstake