The Carbon Express Crossbow Release Bolt is made from a strong & safe durable, woven-wrap, layered glass offers exceptional strength properly to disengage crossbow safely every time. Easy Recovery Ultra-dense steel front-end tip is built to withstand ground impact without burrowing below the surface. Highly visible vanes make it easy to locate after discharge. Multifunctional Release bolts are inserted with moon nocks that fit a majority of today's competitive crossbows.