Assortment of (12) 1.65 ratio – Jesel Valvetrain brand shaft roller rockers for Chevy V8 applications purchased in a buy-out – not much known but box was labeled SB Chevy – unknown standard small block or SB2.2 or other - some scuffs and scratches from being used/ran – all spin fine and smooth – verify condition in the pics for your application – all rockers shown are not individually numbered – rockers are a mix of standard and offset – all stamped 1.65 ratio