Spark R&D Ibex ST Crampon OVERVIEW & FEATURES Ibex ST Splitboard Crampons offer 4WD for your splitboard and are a necessity when the skin track gets firm or icy. They feature an overmolded ST Tech axle for easy installation and smooth rotation. Crampon teeth are fully engaged when used with or without the Whammy Bar for maximum security on dicey terrain. Our dual-width design features one crampon that is slightly wider than the other, allowing the crampons to nest together for easy handling and reduced packing space. Weight: 5.50 oz/ea (156g) - 11.0 oz/pr (312g) - Regular Compatibility, Setup, & Sizing Climbing crampons for Arc & Surge (including ST and PRO versions), Magneto, AfterBurner, Burton Hitchhiker, and Nitro Vertical bindings. Also compatible with Heel Lockers and Riser Kits.