Shafts Harrows Speedline Medium M2BA black 3 pcs. Shafts Harrows short is screwed into darts for dart games. Standard thread 2BA. Speedline shafts are 30% lighter than classic nylon shafts. The construction ensures a sure grip and optimal flight power. Streamlined shape reduces drag for better results. Technical data: Thread: 2BA Length (without thread): 40 mm 3 pieces in a pack (in one color and size)