Description 【 Material 】 Made of high-quality 65Mn spring steel: durable and long-lasting. 360 degree inner ring precision design: effectively preventing pipeline damage. 【 Features 】 The interior is smooth and will not bite the hose. Loosen or tighten the bolts to adjust the diameter range. 【 Application 】 Suitable for automotive fuel lines, water pipes, air hoses, silicone hoses, etc. 【 Package Includes 】 12 different sizes of spring clips: 6mm, 7mm, 8mm, 9mm, 12mm, 14mm, 15mm, 16mm, 18mm, 20mm, 22mm, 25mm. Comes with a plastic storage box with a classification chart inside, making it convenient for you to store and categorize sizes. Notes: 1.Please allow 0.1-0.5cm difference due to manual measurement.