Jackson Goldstone worked directly with OneUp's engineering team in Squamish to design his signature grip from the ground up. From sketching up features at the office to riding prototypes to victory on the World Cup circuit, this is a true signature product. The OneUp Goldstone Grips feature a single inner clamp, raised palm pad, 38mm Diameter outer flange, finger ramps, knurled grip body, core cutout under thumb (rubber runs straight to bar) for added comfort and damping, and dual durometer construction. Weight: 107g (Pair) Durometer: Tacky 20A grip body with durable 45A outer flange Length: 140mm Body Diameter: 29mm - 33mm