These things were the best price I could find and for any exact amount you need. The first order did not come with enough screws, so I'd specify in the notes section to ensure enough are included. They are a pretty ingenious device and pretty much all worked perfectly. Sometimes they get stuck in the fully. Loses position, but I found that only seems to happen if you had them retracted all the way on the adjustment screw, so just move it out a half turn and problem solved. Bigger doors need them extended out more, smaller doors less is pretty much the adjustment. Anyway, we did the whole house, 87 doors for about $260 and maybe 3 hours work. Our hardware was not Blum, so this was a modification and I ended up needing to order the spacers afterward. Wish I had known before I needed them as I would have ordered the kits that have both parts.
Anyway, very happy with our purchase and easy do it yourself cabinet upgrade.
Rating: [5 of 5 Stars!]