6Pcs 5/16″x4″ Coupler Hitch Pins – HD Square w/ Wire Lock – For Lawn Mower

6 Pcs Trailer Coupler Pins, 5/16″ x 4″ PTO Shaft Locking Pins, Heavy-Duty Square Towing Hitch Pins, Trailer Safety Coupler Pins, Wire Lock Pins, Trailer Hitch Locking Pins for Lawn Mower Hitches. Trailer coupler pins are easy to use, won’t break or bend, just insert the pin into the coupler and close it.