Trimax 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. Trimax locking hitch pins provide instant security for your camper, boat or trailer by securing your vehicle receiver hitch. Don't settle for low quality knockoffs. Available in 1/2" and 5/8" locking pins. Browse stainless steel, chrome, black, blue and red hitch locks.