Manufactured by Factory Spec & Made in China Included is: (1) 520 x 66 o-ring chain (blue) (1) Master link (clip style) Tensile strength of 8,200 pounds This chain is the appropriate length for stock gearing, swing arms, etc. O-ring style means it will last longer with less maintenance than conventional chains Compatible with Yamaha, fits the following models with stock gearing, swing arms, etc. 2009 Raptor 90 2010 Raptor 90 2011 Raptor 90 2012 Raptor 90 2013 Raptor 90