With same size each end, UD-Profile, High torque transfer, Chrome-vanadium steel 31CrV3, Non-glare look due to matt chrome-plating, locking insert and pawl manganese-phosphated, Hot forged, Jaw: ground precisely to exact nominal size for optimum contact areas, In combination with adaptor 7 RA or 7 RB (please order separately) the spanner 7 R can be used as a (bit) ratchet, Hollow profile comfortable to hold, Warp-resistant geometry with double T-girder effect, For ratchet loosening and fast tightening, Ring 13B0 offset from shaft, reversible