Jet 350213-7-Piece Quick Change Coupler Set Power Tools This head fits 7/8" C-10

This head fits 7/8" C-10 sectional male cable ends

The Strongarm® Super Duty 2 and 3 stage axle jacks cover a wide variety of demands from the trucking agriculture fleet and military sectors

From the Manufacturer

As long as it’s not toxic or wet

The product is 51047 PISTON

Jet 350213-7-Piece Quick Change Coupler Set Power Tools This head fits 7/8" C-10Quick change feature snaps directly onto jaw type couplers no need to remove hydraulic coupler to change accessories , Instantly converts jaw type couplers for fine line greasing for access to confined areas , Protective sleeve secures connection , Ideal for applications where fittings are in hard to reach areas , For hand operated grease guns