These hose clamps are made of high quality 304 stainless steel, anti-rust and long service life. The surfaces are well polished, and the edges are also smooth, so they won't scratch not or will damage the hoses. Suitable for small size thin walled hoses such as air hoses, water hoses, fuel hoses, silicone hoses, etc. Convenient to install or remove by using a slotted screwdriver or hex wrench. Product Description Description: < p>A hose clamp or hose clamp is a device used to attach and seal a hose to a fitting such as a barbed fitting or pipe fitting. These are screw clamps that consist of a stainless steel band and a screw. The clamp is put around the pipe or tube to be connected, with the free end placed in a narrow space between the band and the captive screw. When the screw is turned, it pulls the band threads causing the band to tighten around the pipe. Features: Material: 304 stainless steel. p> Color: as the picture. Diameter (min-max): 13-15mm Quantity: 10 pieces. Contents: 10 zip ties. Note: 1. Since measurements are taken by hand, the sizes indicated may vary by 1-2 mm. Thank you for your understanding. 2. Depending on the brightness and light settings of the monitors, the color of the actual item may be slightly different from the pictures. Please take the actual product as reference.