QKILL 2 PACKS!Adjustable Power Lock Shower Head Holder Mount Suction Cup Hook, SHOWERHEAD Holder Suction Bracket ,10 lb Capacity 2 PACKS!For flat and smooth surface,not suitable for rough plane. For flat and smooth surface,not suitable for rough plane. *Angle: Adjustable. *Withstand gravity: 5KG. *Material: ABS Resin for Aeronautical manufacturing use. Self-priming installation without drilling. Install and remove easily with the suction cup.