Feradyne Nockturnal Shift Nock Red & Green Strobe 2-Pack - NOCK NT812

Lighted nock designed for archery arrows with strobing red and green LED features for improved visibility and tracking during low-light conditions. Constructed from durable polycarbonate that is waterproof and shock-resistant. Compatible with X, H, S, and GT arrow shafts with different inner diameters (.204 ID to .246 ID).