Coupler, Body Material Nylon, Seal Material EPDM, Tote Connection Size 2 in, Threaded Connection Size 3/4 in, Threaded Connection Type Buttress, Hose Inside Dia. 3/4 in, Diesel Exhaust Fluid Compatible Yes, Wetted Materials Polyethylene, Agency Compliance ISO22241, Features Protection From Contamination, For Use With 4 Pin RSV Valve