Offers maximum line-cutting ability for IBO and ASA competition with Diamond Weave technology for even more strength. Spine selection tolerance of +-.002” ensures consistency across each dozen. Straightness tolerance of +-.0025” and weight tolerance of +-1.0 grains. Outside diameter: .381”, Spine: .361”, Weight: 7.1 GPI. Includes BullDog nock collars only. Nocks and points sold separately.