Attributes . For use on long handle, rocker lug or pin lug couplings from 2-1/2" to 6"; can be used on Dixon's cam and groove pin lug or trapezoidal lug tank car adapters or 8" pin lug couplings; open end slips over long handles for additional leverage while the claw fits rocker lugs or pin lugs, the other end can be used as a pry or crowbar. . Names