These are Zero Offset Beadlocks from Maximizer Products Inc. FEATURES: Black in Color 12 Spoke Design The Beadlock System allows you to change tires without using glue The Bead of the tire is locked in place by the black inner rings INCLUDES: (2) Zero Offset Beadlock Wheels (4) Rings (16) 3x17mm Machine Cap Head Screws (1) Instruction Sheet (1) Maximizer Products Inc. Decal REQUIRES: Installation SPECS: Outside Diameter: 3.2" (81mm) Inside Diameter: 3.04" (77mm) Width: 2.17" (55mm) Hex: 17mm COMMENTS: Maximizer"s beadlocks now come with New Rings. They are lighter, stiffer and more universal. No need to purchase Rage Rings for use with thin bead tires. Simply insert ring shims on the inner lip of rings to accomodate thin bead tires such as: ProLine: Crimefighter, Bow Tie, Mulcher, Paddle and Road Rage Imex: Swamp, claw, Dirt, Rib, Road, Pin and Trail Dawg HPI: Dirt Bonz and Claw Losi: KingPin The zero offsets are actually 1/2" when measured from front to back. All wheels have a slight offset so the half inch is similar to what comes stock on any wheel. EEW 10/3/06 ir/jxs updated jpg 10/25/06