These locking tuners are great. Had to learn a bit on how exactly they operate since I've only had locking tuners with the screw-wheel at the back. These need to be unwound (at least for the first time) via screwdriver from the front. My main point to get these was that I have a 1to1 swap with the Epiphone cheap-end Grover tuners. They delivered on that (3 of the back screws were off south by ~0.5mm, but with a gentle installation, it worked out fine. Didn't have to make any adjustments to the guitar. ~30min to swap them all. Must be ~10-15 min for a pro). I like the design of them as well. Would have bought the pearl version of the bells, to be honest, but somehow Thomann doesn't sell that option (even on Grovers). Very weird and disappointed at that. Not Gotohs fault.