EASY TO INSTALL - Clean the surface with dusty oil/water to keep it flat and dry. For metal surfaces, smooth glass, smooth wood, smooth tiles, etc., tighten clockwise. For surfaces that are not smooth, such as rough wood, latex paint, textured tiles, you can start with a sticky tray (supplied). Adjustable Angle - You can adjust the angle, position and place the desired height by repositioning the showerhead (opening to fit 3/4" handshower/spray). To note: (Please confirm your hand shower before purchasing the size) Advantages of suction cups - No drilling, no stapling, easy removal and repositioning ability, up and down position, inside or outside of a child’s tub, they can finally shower on their own. For the elderly, they can make showering more convenient. Main Material - ABS plastic material and modern transparent design. Lightweight and strong engineering grade plastics. Product Parameters - Vacuum lock, 4 adjustable corners, ABS engineering plastic, dimensions 2.8"L x 2.8"W x