SUMO III - Features: The SUMO III is CNC machined from thick 6061 Aluminum with a simple and super strong design. - Bore: 15/16”-24mm. - Thickness: 6.0mm. - Adapters: For 22mm & 19mm spindles included. - Sizes: 25 or 28 teeth. - Colors: Anodized Black, Blue, Polished, Red, or Painted White. - Weight: 2.3oz (25T).