Handle Adjustment: The SONAIGER Hose Clamps are designed to be advanced and can be used without any tools. The hard metal handle replaces the traditional screwdriver. Wide range of sizes: The set contains 20PCS Hose Clamps. there are 5 sizes in total. each size has 4: 3/8''~5/8''(10mm-16mm). 5/8''~1''(16mm -25mm). 3/4''~1-1/8''(19mm-29mm). 1''~1-1/2''(25mm-38mm). 1-1/4''~1- 3/4''(32mm-44mm). Durable: Made of high quality stainless steel. it will not live even in humid environments all year round. With high-performance corrosion and acid resistance. you don't need to worry about it rusting or cracking. Wide range of uses: Hose Clamps can be used to fix hoses. pipes. cables. pipes. fuel lines. etc. Ideal for indoor or outdoor use in automotive. industrial. marine. home. etc.. and also very practical for chemical experiments and beer and beverage manufacturing. High-quality after-sales: If you have any questions or dissatisfaction with the Hose Clamps. you can contact our after-sales customer service at any time. Our after-sale policy is a 60-day hassle-free refund and 2-year free warranty.