they work, i've had to set them at a higher din than my looks, but i have them on 2 pairs of skis, the 614s and the 816's and both seem to work pretty well.. They release a lot though if you land sort of back seat on a flat landing.. i'll double eject sometimes casing a jump and it's silly. also when landing switch pretty hard and the ski rips off, the break is only held in by a screw in a metal plate, and the metal plate screw hole gets stripped.. I'm on my 3rd screw, each one larger each time. but other than that they are good and super solid