LS1/LS6 CHEVROLET 1.75 ROUND PORT FLANGES. THESE FLANGES ARE MADE FROM HEAVY DUTY 3/8" LASER CUT 304 STAINLESS STEEL FOR SUPERIOR RESISTANCE TO WARPING FROM HIGH HEAT. WE USE NOTHING BUT 3/8" FLANGES ON ALL OF THE HIGH QUALITY HEADERS THAT WE BUILD!!!
A Stainless Works product.