These heavy-duty, lightweight fire hose couplings are made from 6061-T6 high-strength aluminum alloy. Swivels are attached with a piston ring, stainless balls, or roller bearings. No roll-over or still threads are ever used to attach swivels. The 6061-T6 aircraft aluminum alloy gets a smooth hard-coat finish. Comes complete with rings and gaskets. All gaskets are lathe cut and the expansion rings provided are 85-15 red brass.
Male and swivel have rocker lugs.
Sizes from 1” to 6” diameter. 
Available in Pin Lug
National Standard thread - NH or NST
Iron Pipe thread - NPSH or SIPT
Tapered Pipe - NPT (this considered a Special Thread and cannot be furnished on a swivel.)
For hard suction sizes or other bowl size requirements, refer to A-1980
Also available in Female only and Male only