Replacement/Upgrade Thumbscrew - Tightener for Endpin Collar (fits Kay/Engelhardt)
Amazon.com: CZC AUTO Hitch Clamp Stainless Steel Anti-Rattle Stabilizer Cross Clamp 2 Inch for Hitches On Trailers of Trucks SUV Vans RV, Hitch Tightener for Hitch Tray Cargo Carrier Bike Rack Trailer