Need a better quality nock for your arrows? The Blazer Nock from Bohning has a double lock feature that is just tight enough to keep your shaft on your string while maintaining an incredibly clean release. Fits Easton Super Uni-Bushing system and standard carbon shafts. It is a press fit nock designed for "D"-loops, and is made of durable, impact resistant polycarbonate. It weighs approximately 10.3 grains.