The Black Eagle M Nock Fluorescent Green 44 is a high-quality polycarbonate nock designed for optimal performance with Deep Impact and X-Impact carbon shafts. Featuring a throat size of .120 inches, this nock is also compatible with Magnum, Challenger, Carnivore, Zombie Slayer, Outlaw, PS23, PS26, and PS27 shafts. Weighing 7 grains, the M Nock Fluorescent Green 44 ensures precise and consistent arrow flight. Its vibrant fluorescent green color adds a touch of personalization to your archery setup, making it both functional and visually appealing Black Eagle M Nock Fluorescent Green 44