Designed to add 1 degree of rear toe-in for increased stability and traction on your Traxxas Slash, Stampede VXL, Rustler VXL. CNC machined from high-quality aluminum material, these rear hub carriers holds the tight-tolerance for an accurate 1 degree toe-in. A set-screw over the hinge-pin design secures the hinge-pin in the hub carriers. This design prevents wear from the hinge-pins on the hub carriers and also accurately holds the 1 degree toe-in angle (Note, set-screw designed to be used with ST3640 Lock-nut style hinge-pins or E-clip type hinge-pins. Do not use set-screw on stock hinge-pins). An additional camber link hole allows for longer upper camber link rod for more stability and camber adjustments.