1. Main specifications: Style: rectangular; M6 thread; Dimensions: 30 x 55 mm/1.18" x 2.17"; U groove width: 30 mm/1.18"; suitable for rectangular tube size: 30 x 30 mm/1.18"x 1.18"; Color: Silver; Material: SUS304 stainless steel; 2. Features: U-shaped bolts are made of high-quality 304 stainless steel forged and pressed into one body, with high strength and strong corrosion resistance, and they perform well even in outdoor humid or high-salt coastal areas; 3. Application: Used to fix round or rectangular locking parts, connect to cars, car roof racks, RVs, sailboat trailers, wood, etc. It is also suitable for ships, pipelines and other household and industrial applications; 4. Package content: 2 U-shaped bolts, 2 rectangular plates, 4 nuts, 4 round flat washers;