US Darts - 2 Sets (6 shafts) Aluminum CENTER SPIN - BLACK MEDIUM Premium spinning dart shafts 2 Sets Aluminum CENTER SPIN - BLACK MEDIUM Spinning dart shafts These Center Spin long lasting alumium shafts will fit all 2BA darts. They are an improvement on other spinning systems such as Top Spin and Cyclone shafts. The rear 1/3 of the shaft rotates smoothly if the dart is hit by an incoming dart or if they hit a dart that is already on the board. This system ensures that the shaft is always ready for use and prevents the problem of the tops falling to the floor. 2BA will fit most darts. This is the smaller thread which is found on 90% of all darts. These Center Spin alumium shafts help to deflect incoming darts away from darts that already in the board. We have also added o'rings which will help to keep the shafts from turning loose on the darts. Length 2 1/8 inches