The Vortex® swingarm slider spools are another testament to the racing dedication that Vortex® stands for. Constructed out of lightweight billet aluminum with a plastic slider puck to provide a solid and sturdy mount point for your motorcycle rear stand. Vortex® offers the swingarm slider spools in 10 mm, 8 mm, and 6 mm sizes to ensure they have a fit for your motorcycle. Includes two swingarm spools with plastic slider pucks per pack.