Gold Tip Ballistic Pro Shafts 22 in. 1 doz.. Recommended for crossbows up to 175 pounds or that require a 425 weight range bolt. Features Gold Tip's Smart Carbon Technology for unmatched durability and straightness retention. Specifications for Gold Tip Ballistic Pro Shafts: Manufacturer: Gold Tip Quantity: 6 Length: 22 in Included Accessories: Standard Fletching: Shafts Archery Application: Hunting Features of Gold Tip Ballistic Pro Shafts: GPI - 8.5 Length: 22" Straightness tolerance (+/-.1) Outer Diameter: .343" Inner Diameter: .3" Package Contents: Gold Tip Ballistic Pro Shafts Half-Moon Nock Flat Nock 11 gr Brass insert Pro version of the Gold Tip Ballistic bolt features a straightness tolerance of +-.001 and weight tolerance of +-0.5 grains. Shafts weigh 8.5 GPI. Available in 22 length only. Includes brass inserts (loose) moon nocks and flat nocks.