This is a shock spanner that fits all Ohlins and Showa shocks. This tool is designed to precisely fit the locking rings and the slim design allows it to get into tight spaces so that preload can easily be adjusted. It is cnc machined out of high grade steel and then clear zinc plated so it will last forever. This auction is for one spanner but we suggest you buy two to lock the rings together. Fits all Ducati's with Showa or Ohlins rear shock.