Although I bought this to adapt for use with a vacuum type bleed system, I pressure tested it at much higher pressure than any pressure bleeding system will generate beforehand (120 P.S.I.) It sealed against the bleeder fitting completely without excessive tightening and should work as advertised on any system for a long time.

This product is excellent for bleeding Cub brakes. It is very easy to use and much less messy.

This worked exactly as I expected. The brass fittings are a commercial type which I didnt need for my bleed arrangement. I got the ones I needed from the hardware store and I was able to get the air out of the brake system on my RV7.

Not a real good fit.

Actually 5 stars for design and initial snug fit, but the interior aluminum compression fitting can be easily over-tightened, compressing the nose end to near flat where it will no longer seal. Looking for a sales outlet for the aluminum fitting for way less than re-buying the whole thing.