High-quality stainless steel hanger bolts M10 x 200 mm, suitable for the installation of solar photovoltaic Height adjustable, with hexagonal drive SW7, completely pre-assembled and includes weather and UV resistant EPDM seal and locking nuts Attach to the roof to mount your aluminium profile rails to which the solar panels/photovoltaic are attached. For attaching to sheet metal or roofs, as well as for wall mounting with rear ventilation. Colour:Photo Color Material:Stainless steel Package Contents: 4X hanger bolts Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.