Has anyone used these or know anything at all about them? this looks more like dressing for a real hose but it came with couplers and reducer inserts. how does it actually seal to the outside of the hose since its like corrugated?

here's a pic of what i have with a coupler on it:



and here's the link to the product at summit:
summitracing

thanks a mil for any input at all

 

^ the outer alum. is just for looks it doesn't seal, you just push the hose out of the end and hose clamp it like normal....there should also be some alum. hose end cover which slip over the exposed portion.