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I bought two SMKF products together - this leveler and a palm tamper. I'm a little undecided as to whether I need both, but I am currently using both in my espresso making process. They're heavy, and feel and look very well made. The adjustment mechanism works really well - this was something I wasn't sure about when I ordered - you loosen the top part, and it allows you to adjust the bottom, then you tighten back up. A great system that stays in place and yet is very easy to adjust. The leveler works exactly as it is supposed to - not sure what the $100+ versions do that this doesn't. The leveler and tamper are together giving me very consistent shots. Glad I got it.
Update: I've been using this a while now, and think its very beneficial. However trying to adjust it after its been used for a while is next to impossible. I guess the mechanism tightens on itself over time, so after a few weeks, trying to undo the top part to allow adjustment of the depth seems impossible, with it being overtightened. I had to get vice grips the first time round, and sadly that marred the finish a little (even though I used a protector between the grips and the leveler). The second time it jammed, I was able to get it undone using one of those bottle openers, for really hard to undo bottles. Other than that, still happy with it. Just knocking a star off for the difficulties.
Not the seller's fault, but it is way to big for my machine. Wasn't cheap but it is well made and feels good in the hand. Just wish I'd taken measurements before ordering this when it won't work with my equipment.
Does what I need it to do; help level and distribute the coffee. Makes it much easier to get a level tamp. Has a good weight to it and good adjust ability. I'd buy it again and recommend it to any beginning coffee enthusiast.