[VERY IMPORTANT STEPS]: Step-1 : Wipe the walls with paper and dry towels. Step-2 : Remove the film from the suction cup. < / p> Step-3 : Pull the protruding part up, tighten the wall and squeeze the air from the suction cup. Wait 10 minutes before using. Step-4 : Attach the shower head to the holder and twist the top disc clockwise to tighten it. [Large Adsorbability]: The suction of this suction cup shower head holder is 2-3 times that of ordinary suction cup. If the concave convex surface is less than 1cm, it will automatically fill. Moisture waterproof, adsorption more solid, not easy to fall off. [5 Angle Adjustable Modes]: Shower head for 3/4 “standard connector, suitable for hand shower and bath bidet, with 5 modes, 45 degree adjustable, reasonable design makes bathing more convenient. [Scope]: The universal shower holder is suitable for flat smooth surfaces, ceramic tiles, smooth glass, stainless steel ect. Scope: The shower holder is suitable for flat smooth surfaces,