Allows adapting your wrench to inserts with a smaller or bigger receiver .Insert is fixed to the torque wrench by a spring-loaded retractable pin .Range covers from 9x12 to 27x36 receivers .Suitable for 7465, 74W9, 74W14, 74P9, 74P14, IZO-D, TAW9, TAW14, TAW24, TAWM9, TAWM14, TAWM24 wrenches .Torque length is altered and the target torque setting must be calculated