This is a u weld kit for your own custom exhaust. Kit comes with everything pictured here. All pipe is 1" OD with the exception of the tailpipe. Exhaust flange fits newer Tecumseh OHV engines up to 8HP. Will also fit some Briggs engines. The Kit includes: 1) 170 Degree bent piece 1) 90 Degree bent piece 1) 60 Degree bent piece 1) 1 1/4" OD Straight Piece 1) Header Flange- Center hole 1.150" ID. Bolt holes 1.560" center to center, for a 1/4" bolt.