99-06 Chevy Silverado/GMC Sierra Extended Cab Lower Slip-On Metal Rocker Panels (Set of 2) Made from 20ga. Galvanized Steel OE Quality and Fit Fits 99-06 Chevy Silverado and GMC Sierra Extended Cab Trucks Each Rocker Panel Measures 73 x 6 x 1 Each Rocker Panel Weighs 6 lbs.