Do not punch holes and do not damage any mounting surface.Anti-UV, anti-UV agent is added to the product, and it will not change color for a long time.The product is installed with glue and has a beautiful appearance.perfect for bonding to the roof-no need for drillingStrong and secure fitting for small and larger solar panelsGreat for motorhomes, campervans, caravans, lorries, buses or other flat surfacesCan also be used on flat roofs of buildings, sheds, garages etc.Suitable for a range of rigid-framed solar panelsName: corner mounting bracketFit:for Caravans RV Lorries Buses Boats YachtsSpecifications:Strong and secure fitting for small and larger solar panelsColour:WhiteMaterial:plasticPackage Contents:4 * corner mounting bracket2 * side mounting bracket1 * Waterproof transition boxOnly the above package content, other products are not included.Note: Light and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.