Today i went and got some PVC piping for the arm stilts that are for the kirin quad suit. I got 4in, (the black) for my arm and for the handle, some 2in, (the bigger white) for the extension of my arm, and 3/4in for the handle. Also got four 4 1/2in bolts with locking nuts and some crutch handles to go on top. Im hoping to get these cut and put together for foaming this weekend. All this cost me about $23!