Insert the nock, align it and youre ready to shoot - no messy, time-consuming gluing. Built-in index and alignment system as well as a nock recess to eliminate cracks and gouges. Fits Easton Uni-bushing systems and all O/S Carbon shafts. Constructed of durable, impact-resistant polycarbonate. Made in USA. Per 12. Colors: Lime, Rose, White. Cancer and Reproductive Harm- www.P65Warnings.ca.gov. Type: Nocks.