[Material:]The hose clamps are made of 304 stainless steel, flexible and ductile. Sturdy and durable, not easy to deform and rust. [High Quality]The entire hose clamp is made of premium stainless steel. Salt-proof, anti-rust, anti-corrosion, waterproof, oil-proof. The pliers are robust, solid and reliable. [Easy To Use:] Just loosen or tighten the screw of the hose clamp with a screwdriver to adjust the size, then firmly attach the pipe to the joint. [Easy To Install: ]Loosen the screw with the screwdriver, thread the pipe through the clip, adjust the size, then tighten the pipe and the connector. [Usage:]Suitable for domestic and industrial applications, secure hose pipe cable tube fuel lines for plumbing applications, automotive mechanics, electronics etc.Size:13-19mm Features: Provides sealing fittings for domestic, industrial and agricultural applications, pipe connection function, such as for water pipes, gas pipes, etc. Made of 304 stainless steel, with screws, easy to install and disassemble. How to use: 1.Use a screwdriver to loosen the screw of the clamps. 2.Pass the hose through the hose clamp and adjust the size to your hose size. 3. Finally tighten the screw. stainless steel hose clamp: Material: Excellent 304 stainless steel Color: silver. Package Contents Size Range: 6-12mm 9-16mm 10-16mm 13-19mm 16-25mm Package content: 12 * Hose Clamps Note: Not suitable for children under 3 years old due to small parts