This is a set of 4 plastic corner mounting brackets for fixing solar panels to vehicles plus side brackets and cable entry gland They are ideal for Xplorer and most makes of solar panels and can be used with most other rigid-frame solar panels Installation is easy: 2 holes should be drilled in each bracket, and corresponding holes in the solar panel frame on each side; then brackets should be fixed to the solar panel using self-tapping screws (not included). Finally, brackets can be bonded to the roof using an appropriate sealant or adhesive tape (not included) - sealant is recommended for stronger bonding. Specifications Corner Brackets Material: plastic Colour: White Size (1 bracket): 15 x 15 x 6.5cm Weight: (4 brackets): 1.6kg Small Side brackets Material: plastic Colour: White Size (1 bracket): 18 x 9 x 6.5 cm Weight: (2 brackets): 1.0 kg Twin Cable Entry Watertight cable entry for 4-12mm cables Ideal for mounting solar panels on motorhomes, campervans, caravans