S & T RACING INC 12MM CLAMP Wheel HEX Adapt (Blue) ST3654-12B This is the 12mm Hex Hub from ST Racing for the Traxxas Electric Stampede, Rustler, Bandit, Slash and Nitro Slash. Features: Features: These are blue in color. Includes: Four hex hubs, One 1.5mm Allen L-wrench Specs: Width: 12mm (15/32"), Thickness: 6mm (5/16"), Diameter hole: 5.5mm (7/32") Part number(s) included (in factory packaging): ST3654-12B