I had a set of these, for a while. The blue version 1's. I believe there are a few different length drive shafts that you can get, if you want slightly longer ones. My recollection is the longer longer ones were available first, the shorter ones came a little later. I think it was around 2000 when I got my feet on some. I wanted a center pedal .... and at the NAMM show I was able to play the Off-Set and the Sonor (Center Step, I think they called theirs). Found a used one on eBay ..... and found it to be a decent enough pedal. Later, I got a Sleishman, again, off eBay .... and sold the Off-Set.