The Predator™ XSD is designed to offer outstanding strength, durability and high-powered performance at a great value. The Predator XSD features Carbon Express ® 360® spine consistency, and the .166" ID XSD shaft delivers hard hitting penetration and minimal wind drift. - XSD: The Predator XSD shaft features an extreme .166" Inside Diameter for better penetration and less wind-drift. - XSD In-Out Insert: The Predator XSD in-out insert will fit all standard screw-in field points and broadheads. - Matched Weight Set: All Predator™ series 12-pack sets are sorted and matched by weight for best-in-class consistency. Weight sorting tolerance is +/- 3.0 grains. - Real Straightness – Every Predator series shaft is laser checked for straightness to remarkable 1/10,000 of an inch. Predator shafts are checked to a straightness of +/- 0.006" as a maximum measurement, not an average.