The Harpoon™ is a high performance rigid frame waterfall crampon built on the time tested vertical rail design, but that doesn't even begin to describe the Harpoon's™ performance or versatility. Use it in the dual-point configuration and you'll find it's a stable, precise and sure-footed crampon, capable of getting you up any icefall in the world. The forged points have a “T” profile so they resist shearing through soft ice and they’re completely vibration free. Install the optionalMono-Point Conversion Kit and the Harpoon™ becomes a foot weapon, lethal to the hardest, steepest and thinnest mixed climbs on the planet. That's because the asymmetrical design of the mono-point puts the power where you can control it...right under your big toe.