Ratchet 3/8" fast rotary handle -Rotary handle mechanism: work twice as fast in difficult-to-reach areas. -60 teeth mechanism for a 6° recovery for the final tightening. - Socket safety lock: no socket loss in your machines. - Inversion by rotary cap. -"Palm of the Hand" system allows to press the ratchet head during the clamping without the risk of accidental reversal of the direction of rotation. -Bi-material elastomer handle: Strong resistance to abrasion and the most severe workshop solvents: SP95, SP98, diesel, acetone, brake fluid, Skydrol, Jet oil, kerosene.