Trimax premium receiver hitch locks. Dead bolt style hitch pin locks. TRIMAX The Leader in Receiver Locking Pins has spent the last 10 years expanding and improving on the "ORIGINAL". The Patented Dual Lock Lug Design offer over 5,800 Lbs. of head pull strength. A 1/4 turn of the rugged tube key locks & unlocks the strongest locking pin on the market. Provides instant security for your camper, boat or trailer by securing your vehicle receiver hitch Don't settle for low quality knockoffs. 5/8" Locks availabe in chrome, stainless steel, black, red, blue. 1/2" Lock available in chrome.