Use controlled screw tightening in the range 8 1000 nm ideally used in hard to reach locations for use in all areas of industrial manufacturing features adjustable torque wrench for controlled bi directional tightening with 16 mm spigot end type az bz cz 22 mm spigot end type dz or 28 mm spigot end type dxz with extension tube with pin locking mechanism for replaceable 16 22 or 28 mm spanner end fittings acc to din en iso 6789 traceable to national standards autom