What spine arrow shaft is best for you? Buy the Easton Carbon Legacy™ test kit to find out! Easton has crafted a carbon arrow shaft that honors tradition while embracing technology. The Easton Carbon Legacy™ arrow shaft features a traditional wood grain look on a high-quality carbon fiber arrow shaft. Easton Carbon Legacy™ arrow shafts feature a .244" inside diameter. They are installed with 6.5MM 3D Super Nocks, with RPS aluminum inserts included. The test kit is sold with one each of 340, 400, 500, 600, and 700 spines. You can test each of them to determine the spine that is best for your set-up. Sold full length. Click here to cut to length. Inserts included, but not installed. Click here to get inserts installed. 6.5MM 3D Super Nocks installed RPS aluminum inserts included Constructed of high-quality carbon fiber Realistic wood grain finish with a high-visibility white cap .244" ID Straightness ±.006" Easton Carbon Legacy™ Carbon Shafting Specifics Spine Point GPI Length Insert Nock 340 5/16" 10.1 34" RPS Aluminum 3D Super Nock 400 5/16" 9.3 34" RPS Aluminum 3D Super Nock 500 5/16" 8.3 34" RPS Aluminum 3D Super Nock 600 5/16" 7.5 34" RPS Aluminum 3D Super Nock 700 5/16" 7.1 34" RPS Aluminum 3D Super Nock Straightness ±.006" Weight ±1 grain