I previous tried the V-band clamps and realized these are way easier and seal up 100% every time.

Works great. No leaks. Easy to use! Heavy Duty! NO more collector gaskets!

Well made and solid

I used two of these to construct a exhaust system you could take apart if needed, the ball style makes a leak free connection without gaskets.

For the money these Headman exhaust collectors are the best out there when it comes to weld on collectors