Thank you gentelmen for your help. I found them on both the SIG and Dubro web sites, although my LHS assured me that they were not availalable seperately. They make great float fittings in conjuction with aluminum arrow shaft spreader bars. The arrow shafts are cut to the desired length and fitted with the standard 6x32 screw inserts at both ends. A 6x32 bolt is then driven in from the outside through the nose wheel block- aluminum u/c - into the arrow shaft. Simple firm and neat. The float track can also be adjusted, by fitting spacers if necessary.