This is for one rear Axel flip kit for the rear of Chevy trucks it uses stock u bolts no cutting required or modifying 100% bolt on we used these kits daily in our shop on installs we make them all In house we have these for all Chevy trucks form 2007 to 2013  all models  fast shipping takes about 1-3 days lower 48 states max and ship  them locally from California made in the USA