These knobs were just the thing to dress up our master bathroom vanity. They are easy to clean. They only send 1" screws but I did not realize I needed longer screws until I went to install them. That was no problem as I was able to work around it by carefully drilling a hole from the inside of the vanity (I noticed my contractor had done this in another bathroom) so the end of the screw was able to be secured to the knob. Quick fix!