The handles come with their respective screw / bolt to screw to the door, drawer, etc. It depends on where they are placed, it may be that the screw is "long" so it can be cut for use. Simply screw in with a screwdriver and it will be fixed and ready to enjoy.
Handles are cleaned with a soft, dry cloth. Do not use abrasive products and rough materials such as sponges or virulanas that can scratch the enamel.
We do not have a showroom for sale to the public, but we do have a pick-up point in Recoleta, CABA.