Check the listing for details. MAC Replacement Baffle Megaphone Competition Exhaust Muffler mufflers 4:1 RAW. Color: raw steel, Condition: New. Listed at 59.99 USD. FITS MANY VANCE AND HINES MEGAPHONE STYLE!!! I also have BLACK finish available! eBay item number:233777702402 MAKE SURE YOU MEASURE FOR YOUR APPLICATION! BUYER will pay Original and Return shipping if you don't measure correctly! Fits MAC and many Vance and Hines 4-1 Megaphone Mufflers with approx 3.85 ID - Does NOT fit canister styleBig end is 100mm or 3- 15/16"Small end is 72mm or 2- 9/16" Straight thru design improves performance over standard mechanical baffle Length 11" RAW STEEL there is a slght variance at the big end, because the metal is appears to be rolled so the widest part at the tip/ the very end of the baffle is 99.2mm. however the majority of that edge is 98mm, meaning you can use a bench grinder or heavy gritsander on your angle grinder to bring it level 98mm all the way along the edge pretty easily. Double check the conversion measurements: I came up with 98mm = 3.8582677165 inches You get ONE (1) baffle per order!