While I've used a Lezyne tubeless pump for years and it *mostly* worked ok, I would always come across stubborn tire/rim combos (notably with gravel or mountain bikes) that just wouldn't seat the bead.....then it would be off to the bike shop where they would mount it in a matter of seconds with this tool and compressed air. Finally decided to bite the bullet and get one (already had a small DeWalt air compressor), and it works like a champ. I've had no issues with presta or shrader valves, and removing the valve core to mount stubborn tubeless tires works very well. As an added bonus, just filled up my car tires as well....no more having to blow out my triceps pumping those up anymore. If you have an air compressor, change out tubeless tires somewhat often and have issues with mounting, you need one of these. After a few $20 trips to the bike shop to get tires mounted, it starts to pay for itself.
Normally you can't go wrong with a Park Tool tool.
But I'm deeply disappointed in this one. It's just difficult to get a good seal on a Presta valve. Air constantly leaks, even as I move around the head trying to find a good fit. On all 4 of my bikes. I thought maybe I had a damaged head, so ordered a replacement, but have the same issue.
Excellent product like always from Park Tool. Built sturdy and has been a great addition to my garage/shop.
