Gold Tip Velocity XT makes slow bows fast and fast bows faster. String jumping game has met its match with the Velocity XT. Constructed of Gold Tip's Smart Carbon® Technology for unmatched durability and straightness retention. Included Components Accu-Lite Nock Accu-Lite Insert Small (500-600 spines) Specifications Straightness Tolerance: +/- .003" Weight Tolerance: +/- 2 gr 6.3 gpi Inner Diameter: .246"