Get your pump couplings from Grainger. There are pump adapter kits, pto quick couplings and motor adapters for select pumps. Coupling kits include a coupler, adapter, motor bolts and washers. They are suitable for rotary pumps only. Use PTP shaft coupling to couple 15/16 in diameter shaft to standard 1 3/8 in 6T PTO shaft. Buy pump couplings from Grainger today!