Bahco open end metric insert is fixed to the torque wrench by a spring-loaded retractable pin.

Insert is fixed to the torque wrench by a spring loaded retractable pin  | Range covers from 9×12 to 27×36 receivers, from 7 to 90 mm openings, from 9 to 3000 N.m  | Sizes with * in torque length require target torque setting calculation