High Precision Spring Hose Clamp - Made of high quality spring steel for durability and reusability, surface zinc plating. Available in a variety of sizes - 4 sizes (diameter: 8mm, 13mm, 16mm, 17mm, 20mm) Freely adjustable to accommodate pipes of different sizes. Specifications and Quantity - Natural diameter: e.g.: M5 = 5mm; Extend maximum diameter: 5.8mm. (For other detailed dimensions, please refer to our size chart); 12 pieces of spring hose clamps. Universal hose clamps are commonly used for air hoses, oil hoses, fuel hoses, air hoses, silicone drain hoses, washing machines, or dishwashers. Suitable for household and industrial applications, they are also suitable for personal applications. A variety of different sizes to meet your needs, please carefully refer to our product details before purchasing, ensure the appropriate size of the hose clamp. Manual measurement, there may be slight errors, please understand.