The Disc Plate Hanger sticks to the back of the plate, holds it flat and secure against the wall and cannot be seen. Safety Assured - The Disc gives a permanent adhesion of great strength to a glazed or an unglazed surface. A fixing that will not "age - harden" or deteriorate with time. It is unaffected by any normal household extremes of temperature or humidity. Suitable for all sizes of plates and plaques. Disc Plate Hangers are available in 5 sizes from 30mm (1 1/4 in) to 140mm (5 1/2 in). EASY TO USE: First clean the plate, (even if the plate is new, as surface contamination may inhibit adhesion). Wet the adhesive side of the disc and slowly agitate with your finger to activate the glue. When the glue becomes "tacky" apply the disc to the back of the plate (ensure the hook is in the correct position for plate design). Press down firmly. Leave to dry overnight before thoroughly testing strength of adhesion. Hang your plate on wall and admire! The Disc removes completely in warm water and will not remove back stamps, glazes, or any other markings.