The Stainless Steel Brake Line 79-91 Suburban Chevy/GMC Front 8600 GVWR Or Greater Lift Height 3-4 Inch Pair Skyjacker is an essential upgrade for off-roading and lifting. These stainless steel brake lines are made from high-grade material and are designed to provide superior strength and durability in tough conditions. They are designed to be used with 3-4 inch lift heights and can be used on Suburban Chevy/GMC vehicles with a GVWR of 8600 or greater. These brake lines are easy to install and are sure to provide a safer, more reliable ride.