Scopes of ApplicationThese expansion tubes are ideal for anchoring in concrete, brick or wallboard surface, can used for fixing curtains, calligraphy and painting, lamp, storage rack etc.Tough and DurableThese expansion tubes are made from high quality plastic, which is of high toughness and durability.Anti-rust and anti-corrosiveDue to the premium material, they are anti-rust and anti-corrosive also.Easy to useJust plug it into the pre-drilled hole, then screw up the screws.Specifications:Type: Expansion Pipes WITH SCREWSMaterial: Plastics&METALColor: Yellow