This suspension ball joint set is designed to fit Chevrolet Colorado RWD models from 2004 to 2012, as well as various Isuzu and GMC models. The set includes 2 lower and 2 upper ball joints with mounting hardware, and features 100% accuracy of fit. The ball joints are made of steel with cotter pin holes, and come with a 1 year manufacturer warranty. This direct replacement set is ideal for those in need of new suspension components, and is easy to install with bolt-on mounting style. The package includes 4 pieces and weighs 8lbs. Interchange part numbers include K80997, 8890402400, 89040240, and more. This item is a must-have for anyone looking to upgrade their suspension system.