The CenterPoint(R) Archery CP400 Power Draw Rope Crank Device features an advanced mounting system that makes it quick and easy to attach to your CP400 crossbow. Once attached, the Power Draw will reduce your crossbow`s draw weight by up to 70%. Product Features Up to 70% reduction in draw weight Fits onto your CP400 crossbow Ambidextrous design Unique mounting system for easy in the filed use