Product Details: Update your truck or trailer with secure axles, with the Stemco 1-1/2"-12 Pro-Torq® Axle Spindle Nut with Lock that ensures you're Ready for the Road Ahead™. Due to its advanced design, this replacement nut is able to lock the axle in place while maintaining the preload from the wheel bearing, and enduring incredible amounts of torque from large-sized vehicles. Constructed with exact measurements and enhanced reliability to provide easy installation with a socket on front and rear axles. FleetPride is your First Click in Heavy Duty®.