8mm/10mm CNC aluminum swingarm spools slidercondition: brand newmaterial: CNC 6061 T6 billet aluminumitem is easy to install without instructionsquatity: 1 pair (2 pcs) compatible: 10MM: for Kawasaki ninja250 2008-2017for Kawasaki ninja250sl 2013-2015for Kawasaki ninja300 2013-2016for Kawasaki Ninja ZX6R 1998-2011for Kawasaki Ninja ZX10R 2005-20098mm: for Kawasaki Ninja 650 galax2023for Kawasaki Ninja ZX6R 2015-02023for Kawasaki Ninja 400 z400 2018-2023for Kawasaki Ninja 1000sx 2020-2022for Kawasaki Ninja ZX10R 2011-2023