This is Maywon's solar cell rail bolt accessory, which is used to connect rail components to roof brackets. This component includes a 25mm M8 safety head screw, washer, and track nut. This product uses anodized aluminum surface treatment and has anti-corrosion function. The main raw material of this product is AL6005-T5, the nut is stainless steel, and the raw material is SUS304. This product has passed the international standards of TUV, JET, UL, and SGS, with a rated wind speed of 40 m/s. The product quality is 15 years and the usage is 25 years. This is the high-quality solar mounting TT nut set. This product is convenient for installation personnel and can be used for Metal Sheet Roof Mounting, Flat Roof Mounting, Ground Mounting. This installation method saves a lot of labor costs.TT Nut Set For Solar Mounting can be used in every Solar Powered System.