- New
01094 JR Products small coupler lock pin is designed to secure compatible trailer couplers. Made of zinc-plated steel, it offers resistance to rust and corrosion for dependable outdoor use. Its spring-tensioned snap-lock bail helps keep the pin securely fastened during towing. The pin measures 1/4 inch in diameter and has a usable length of 1-3/8 inches. Check that these dimensions and the pin design match your trailer coupler before installation.