loosen the screw of hose clamp by a screwdriver, then thread the pipe through the hose clamp and adjust the fit size, tighten the screw. These hose clamps are made of outstanding material with smooth edges, which is corrosion resistant, robust, not easy to break, and durable for long time use. Hose clamps is flexible, easy to expand, and can easily use a screwdriver to loosen or tighten the belt for installation or removal. The clamping force of hose clamp is strong, and the solid locking structure can lock the hose firmly without loosening and sliding, effectively preventing leakage. Suitable for connecting air hoses, water pipes, fuel pipes, cable pipes and silicone hoses, etc. Perfect for use in automotive, industry, shipping, sign, household etc. Easy to use, pressure-proof, corrosion resistant Wide adjustable range, torsion resistant, durable Easy to Tighten since it is out away from the Clamping Surface Release or tighten the screw to adjust the hoop diameter range Connection fasteners for water, oil, gas, hydraulic hose