Update your truck or trailer with secure axles, with the Stemco 2-5/8"-16 Pro-Torq Replacement Keeper that ensures you're Ready for the Road Ahead. This replacement nut locks the axle in place, while maintaining the wheel bearing preload and tolerating incredible amounts of torque from large-sized vehicles. Engineered with precise measurements and enhanced reliability to provide easy installation with a socket on front and rear axles. FleetPride is your First Click in Heavy Duty.