clamps for fitting new exhaust

[michaeljohn182]

Just bought a new stainless steel exhaust cat back system, but need a new exhaust clamp for connecting the original cat to the new centre exahust.
Anyone know where I can get one of these clamps if there are anyone available that are better than the original one from Renault?

 

[Henry]

Mikalor/Norma clamps are good but expensive; u-bolt clamps are cheap and more widely available but can deform the pipes unless you use exactly the right size (need to accurately measure o/d of pipe)