This hook wrench is made specifically for the Ducati models 748, 796, 848, 848 EVO, 916, 996, 998, Hypermotard, Multistrada 950, Monster S2R/S4R and all models with single swingarm (NOT suited for the 1098, 1198, SF, Multistrada 1200 or Diavel). You may have found out recently that the standard wrench you received with your bike is not made for eternity.
This replacement spanner is made of stainless steel and is more robust than the original. You will be able to adjust the chain tension for a long time, now.
If you ride a Ducati 1098, 1198, SF, Multistrada 1200 or Diavel, you will need this specific wrench.