For Chevy GMC 88-97 C1500 C2500 Pickup 5.0L 5.7L Stainless Steel Exhaust Header Outlet Flange Thickness: 3/8" fits for Chevy/GMC 1988 - 1997 C1500 Pickup (305 5.0L/350 5.7L engine Model ONLY) Chevy/GMC 1988 - 1995 C2500 Pickup (305 5.0L/350 5.7L engine Model ONLY) Made of High Quality T304 Stainless Steel Material Including all items in the picture