Hooker offers a complete line of fully welded flange kits with stubs. We have taken the most difficult and time consuming part of building a custom header and done it for you! Each flange has a 2" long stub welded to it and is machine milled, not ground, to provide a perfect sealing surface. The flange is then internally deburred and helibrazed on the outside to provide maximum strength. Flange kits come with gaskets, bolts and polished stainless steel NHRA contingency I.D. header tags.