Fit for: Suitable for automotive, industrial, and home repair applications. Specifications: Product Material: Metal Sizes: 3/8", 1/2", 1" & 1 3/4" Features: *Versatile Application Suitable for automotive, industrial, and home repair applications. Ideal for clamping fuel lines, vacuum lines, transmission lines, brake lines, and heater pipes. *Quick and Easy Operation Designed for fast and efficient clamping without hassle. Unlike spring-type clamps, these thumb screw clamps do not spring open or fall off, offering reliable performance. *Durable Construction .