RC10 / RC10 4WD CLASSIC BOLTED HINGE PINS (4), REAR ARMS, steel with nitride coating EXO2359Polished nitride coated steel hinge pin set for the rear arms of the Associated RC10 classic series including the rear of the RC10 4WD. Secure design eliminates all of the e clips for quick and easy installation but without the dreaded race DNF's. Also, our pins have improved tolerances for better fit in the arms versus the stock hinge pins. Includes more common m3 lock nuts and hex head pins that uses 1. 5mm hex wrench tips. 4 hinge pins are included