Description: 【Steel material】: Corner Brackets Kit is made of steel, with a stable structure, ensuring strength and stability, suitable for long term use 【Quick disassembly and assembly design】: Corner Brackets Kit can quickly fix the roof box on the roof , which is convenient for quick disassembly and installation 【Circle bolts and four corner fixation】: Corner Brackets Kit uses Circle bolts design,and 4 corner fixation design, which is suitable for square shaped objects to ensure stability and no movement 【Wide adaptability】: Corner Brackets Kit is suitable for most roof platforms with T Shape Slots on the market, with strong adaptability and more flexible use 【Multi scenario applicability】: Corner Brackets Kit is suitable for family travel, outdoor adventures and other scenarios, and is an ideal choice for roof box installation Specification: Material: Steel Size Chart: 10cmx5cmx7cm/3.94x1.97x2.76inch Package Includes: 4 Corner Brackets Note: Please allow slightly errors 1-2cm/0.39-0.79inch differences due to manual measurement.