Bought it specifically to use with a duplex primer/filler unfortunately did not fitWas able to at least use them for some other spray cans I have, but even that was limited

Have not used them yet.

A

Nice idea, unfortunately the tolerances for these are not quite right. Real they kind of work but you just end up leaking paint everywhere.

I've only used one. My review is not a vastly experienced one, so move on to the next review if veracity is important to you.I promised an honest review, however, and a promise is a promise, so here is my limited experience, which, though not at all useful, is honest, and I my opinion is also kind of funny:The one nozzle I used was one I selected from the various available types in the bag as most likely to fit anextra huge can ofblack Flex Seal.I had never used the can, before. The cap and lid had somehow vanished. It was years old.What could possibly go wrong?So,I put the new nozzle on and pressed down, and it's a good thing I had gone outside "just in case", cuz "Just in case" was now happening... out the spray tip, far more around the base where the nozzle attached to the can...It was out of control, so I pulled the new spray tip off, thinking........ I must have chosen the wrong tip, so pulling it off of the can will stop the frantic spraying. ...right?Nope.I Reaallly chose the Wrong Can.That thing didn't stop spraying black, nightmarishly indelible, crack filling, miracle leak stopper....Okay, basically this stuff acts like a combo ofevery substance you've everNot Been Able to get Off your Hands.Of course I had somewhere important to be the next morning, and picked the years-old extra giant can of quazi-sharpie/enamel/tar/silicone/sap/dye/butyl/engine grease/hair color/all over me, the ground, the tree, and then all over a project I tossed the can down on (because I wanted some on that, anyway) until it was empty. Since it was spraying so fast, with such enthusiasm, it only took about 45 seconds for the can to empty completely.My Southern Girl hair style was like a big puff of cotton candyout in the humidity too long,only black,and not soluble in anything.My eyelashes tried to stay together every time I blinked.After trying everything... acetone, mineral spirits, denatured alcohol, Dawn, Fast Orange, Aluminum Oxide powder, a razor, sandpaper, nail files, diamond files, electric sander, WD-40, combos of all, and even clear acrylic/enamel paint, since that's the only thing that melts acrylic/enamel paint, and clear Flex Seal by the same logic,it took over a week to get it all off my hands.Should have worn gloves. Duh. Maybe a hair net and mask and respirator.But, my "what could possibly go wrong" logic was sound, so I stand by my decision.All of that is why:I need to try more of these tips before I can say whether I justchose the wrong one for that can, orthe wrong can,and I sure didn't have even close to a 1 star experience, so , hm...I'm giving 5 stars pending more research....research that I obviously can't do until I have a plan for the entire can of whatever it, and I may even follow instructions and use a mask and gloves,but maybe not,becauseI am a rebel....a rogue stooge, slapsticking my way through this world for the amusement of onlookers and those lucky enough to read through the right product reviews.If you made it this far, I assume you agree with what I said at the beginning;this review is pretty useless.But...humidified cotton candy flex seal hair? Imagine how that felt.To this day I wouldn't dare think of it while drinking milk.After I'm done writing this, I'm going to see what others say in their reviews.I think that's the best advice for anyone reading this.