I purchased these door knobs to replace our mismatched, outdated door knobs throughout the house (ordered some passage and some locking depending on the room/need). These are sleek and seem to function well so far (though we're still in the process of upgrading our doors, so we haven't installed them all yet). My only issue so far is that because they're matte black, they fingerprint easily. I should have considered that when purchasing them, but they look great otherwise.