OUR 409 STAINLESS CLAMPS ARE USED IN CONJUCTION WITH OUR BUMPED ENDS THAT ARE SLOTTED ON THE TUBE ENDS. THESE CLAMPS ARE HEAVY DUTY FOR THOSE TIMES WHEN A BUTT OR LAP JOINT CLAMP JUST WON'T DO
THESE ARE ALSO USED AN MANY AFTERMARKET MAJOR NAME EXHAUST KITS