Altra Arrows Centrum 166 Premier Shafts AA105350. 001?. Using state-of-the-art measuring equipment to verify arrow shaft and component straightness along with Altra?s weight matching process ensures you are getting the most consistent arrows available. Manufactured from a proprietary blend of high modulus carbon this sophisticated construction results in Altra Arrows NO SPINE Technology delivering an unrivaled arrow with improved tunability and increased consistency. The shafts are accompanied by premium components made from high grade aluminum and stainless steel. Specifications for Altra Arrows Centrum 166 Premier Shafts AA105350: Manufacturer: Altra Arrows Color: Black Additional Features: 350 Features of Altra Arrows Centrum 166 Premier Shafts: Comes in 12 pk Shafts QTY All arrow packages are weight matched to be +/- 1 gn 32" Total Length Components Not Included Package Contents: Altra Arrows Centrum 166 Premier Shafts