Features: This wooden photovoltaic support is an essential accessory for the installation of solar panels. Its double-thread design allows for a firm connection between the photovoltaic sliding aluminum profiles and the corrugated area, making the quick and secure installation of the photovoltaic support on any solid surface, whether on an exterior wall or a flat surface, easy. The double-headed screw features three structures: SW7 hexagonal driver, locking groove, and rubber sealing ring, making it simple and easy to use. It is made of 304 stainless steel, which gives it great strength and durability, even in adverse outdoor environments. In addition, the EPDM rubber sealing ring provides effective sealing, resistant to moisture, water, and rust, preventing corrosion and oxidation over time. Its silver-white and shiny surface is antioxidant, smooth, and durable, making it aesthetically appealing. This product is ideal for connecting rooms and installing aluminum profiles for solar panels and photovoltaic systems. Solar parameters: Name: double heat fixed panel. Screw material: 304 stainless steel Surface treatment: Polished Category: Fasteners Head shape: Hexagonal How it works: Self-tapping Diameter: 10 mm Length: approximately 20 cm/25 cm/30 cm Includes: Fixed solar panel screws * 4 units