Custom exhaust flange for use on Briggs & Stratton Flathead Intek 5-6.5 hp engines that use 1/4" exhaust studs spaced 1 9/16" center to center. Made with pride in Colorado, U.S.A. Center hole is sized for 1" tube. Flange is CNC cut from 1/4" steel to prevent warping. Stainless steel mounting hardware is included for installation. MAKE SURE TO VERIFY THE CENTER TO CENTER BOLT SPACING ON YOUR ENGINE IS 1 9/16" FOR PROPER FITMENT. Great start for those that want to weld their own exhaust system for generators, go karts, mini bikes, or?