This clamp for fix rails . Main material is AL6005-T5 with average 12μm anodizing film. Unique design of Mid & End clamps are used in different types of solar panels. Special design of rail can make intallation simpler and faster. Parts have been high pre-assembly on factory to save your installation time. Solar clamps can work with most types of solar panels and rails. Quick and easy installation Strict QC over all components ensure the high reliability of the strength Made of aluminum, each section is anodized Economic layout Landscape/portrait    Max Wind Speed < 60m/s    Snow Load < 80cm    Standards AS/NZS 1170, DIN 1055, JIS C 8955:2011     Material Anodized aluminum 6005 T6 , Fasten bolt and nut stainless steel 304     Anti-corrosive  Anodized     Warranty / Duration  12 years/ More than 25 years Details