Black Swingarm Spools For Kawasaki Ninja 250R 650R Zx 6R 9R 10R 12R 14R Z1000 . These swingarm spools are designed to protect your swingarm & axle nut in the event of a crash. They can also be used with a lift stand to lift the rear wheel off of the ground for changing your tire or oiling your chain. Thread: 10mm Color: the same with pictures show Instructions: no instruction,Material: High Quality Billet Aluminum,,,,,,,