LAUNCHPAD PRECISION NOCKS, ALIGNED. PRECISE. ACCURATE. Top shooters know that nocks are an important component of consistent, accurate arrow flight. This insight led Carbon Express engineers to develop the patent-pending LAUNCHPAD Precision Nock. The LAUNCHPAD Features: Precise contact points for controlled arrow release; Concentric design to center the nock in the arrow shaft for more consistent performance; Aligned nock barrel for true arrow flight. NOCKS Strength and Durability - All Carbon Express nocks are made of polycarbonate for strength and durability. The LAUNCHPAD Nock delivers precision engineering and perfect balance that ensures superior accuracy for truest flights. Fits all Carbon Express shafts with a 0.234 and 0.244 inside diameter. Weight: 9.9 grains. .244 diameter. Fits size 250 and 350 arrows. 12 pack. Clear Yellow. Model 50266.