National Hardware's #512, 5/16" x 1-3/8" x 2-1/2" U-Bolt is designed to support pipework, hold rope and chain, and in automotive applications. Manufactured from steel wire for durability. Easily installs with included plate and nuts. Suitable in automotive, plumbing and other home and industrial applications, including marine and other outdoor applications. Coated with WeatherGuard Protection to withstand harsh weather conditions and prevent corrosion. National Hardware's Lifespan Limited Lifetime Warranty