Mahindra 7520, Mahindra 3215HST, Case 580 extendahoe, Case 310 dozer, Parsons trencher, Cat D6,
I believe that they are 1/2" AG type connectors. You are best off getting the poppet style ends. The ball type ends seem to not work all the time even though the poppet and ball type are suppose to be interchangeable.