In my view, this torque setting adapter is required for work peacefully with screwdriver IXO, especially when one has to make screwing "a little sharp." Without this adapter that perfectly fulfills its role (several pairs of positions available to properly adapt the tightening if necessary), the IXO has an efficient torque not a bit surprising compared to the size of the machine, I ' have personally "screw up" a few screws without having time to react. I do not regret this purchase, this was even a necessary purchase, pity that the adapter is not part of the original purchase offer => Marketing offers surprising Bosch. (Minus 1 star for that).