Machine description: CATERPILLAR MANUAL PIN GRABBER COUPLER, CATERPILLAR MANUAL PIN GRABBER COUPLER, PINS INCLUDED, SOLD AS IS, Works with CATERPILLAR 301.4C / 301.5 / 301.6C / 301.7D/ 301.7DCR / 301.8 / 301.8C/ 301.5 / 3... more info about the Caterpillar 301.7D MANUAL QUICK COUPLER.