The dt swiss ring nut tool for pawl drive rear hubs genuine tools specifically for dt swiss hubs dt swiss ring nut tool for pawl drive rear hubs features ring nut tool required for removing and replacing inner bearings on pawl drive rear hubs which are located behind the internal ring nut only works on pawl hubs as used on dt complete wheels for ratchet and aftermarket hubs please use tool hbdt835 simple to use and fits into a vice for workshop use do not over tighten the vice i