This stainless hanger is used to mount the resonator at the rear of your exhaust. This hanger is for use with the OEM sized stainless resonator H3/32 Small Bore. We use the small bore resonators because the big bore is HUGE (diameter) and looks like crap. The strap portion of this hanger fits the diameter of the OEM size resonator. This item is for each clamp; select 2 each per exhaust system.