The Dart Shafts Unicorn Gripper 360 Spin Medium is a set of three fully rotating dart shafts that are 44.9 mm long. The rotating alloy tipped flight holders allow for an unrestricted passage of the darts. The flight rotates up to360° on impact, making room among the other darts in the dartboard. The shafts are made from durable polycarbonate which provides durability and a firm grip. The Spin reduces the chance that the dart will bounce off the dartboard and therefore improves your chance to score.