The Suerpdrive 23 Arrow Shafts are one of the most accurate, advanced, and durable 3D and indoor arrows available on the market. A proven winner on the world indoor stage, the Superdrive utilizes a high-strength, high-modulus, multilayer wrapped construction of reinforced carbon fiber for extreme durability. All of the premium shafts in the Superdrive 23 line are given a sleek black carbon polished finish, and feature a straightness tolerance of ± .002” and a weight tolerance of ± 1 grain per dozen pack. Features: High-strength high-modulus, reinforced carbon fiber Polished black carbon finish Straightness: ± .002” Weight tolerance: ± 1 grain per dozen pack Outside diameter: 23/64? (9.3mm) World Archery compliant maximum 9.3 mm (23XX) diameter Easton Superdrive 23 Size 475 Shafts Incl. 6.5mm Uni-Bushing 12pk 627285 in Black