Attributes . To make a connection, simply slide the adapter into the coupler and with normal hand pressure, press the cam levers down. Uncoupling is as quick and simple as coupling. Just lift the cam arms and remove the adapter; The cast-in lugs allow safety clips to be attached once the lugs are passed through slots in the special cam lever arms providing a positive locking action. The pull ring safety clip simplifies the locking action on Boss-Lock couplers. No more inserting clips or dangling lanyards, just a twist and it's locked, giving you a low profile positive locking action. . Names