I have some black Delrin material (3 1/2" diameter x 18" long) which is excellent for machining bushings or other hard wearing items. It is about 3 1/2" in diameter by more than a foot long. Also have several pieces of high density polyethylene (HDPE) white material (two pieces 3 1/2" diameter x 1 1/2" w/hole) again for making bushings; some hollow and some solid material available. CASH $15 for all of it--that Delrin might be worth $100????