The Invisible hook round from Bosign is a stylish hook in sleek stainless steel. The hook attaches firmly to the wall with a concealed suction bracket, meaning you can easily place it on the wall without unseemly mounting. The holder works best when attached to smooth surfaces such as glossy tile, glass, and metal. Be sure to thoroughly clean the suction cup and the surface with hot water, then let both completely dry before attaching. It is also best to avoid getting fingerprints on the clean and dry surfaces before attachment.