5/8" diameter hitch pin works for class III/IV 2" trailer hitch receivers. Coupler lock has a 7/8" span between the barbells for a snug fit. Type A key which is spring-loaded, 7 pin, high-security key. It resists attempted drill outs. Both rugged and durable. Equipped with barrel style keys - won't ever bend or break.
Locks are keyed alike - includes four keys
Patented 1/4 turn technology that cannot be false locked
Equipped with an internal O-ring and protective cap keeps water, grime, and dirt out of the locking mechanism to ensure years of use
