Durable Stainless Steel: The entire hose clamp (including belt, shell and screw) is made of 304 stainless steel, which is sturdy and durable. The stainless steel hose clamps are resistant to rust, corrosion and sun exposure. You can safely use pipe clamp to fix outdoor pipes without worrying about rusting and cracking . 4/5-1-4/5(21-44mm) Adjustable Range: The stainless steel hose clamps can be adjusted by screws according to the diameter of the pipe. The adjustable design can adapt to many sizes of pipes . Safe and Firm: The tube clamp is very flexible and can be tightly tied to the pipe without loosening, so that the pipe can be fixed more firmly . Easy to Install: The o clamp is very convenient to install, just use a screwdriver to loosen or tighten the screw of the small hose clamp to adjust the size, and then fix the hose tightly on the joint