1. Corrosion-ResistantTUV approved, high precision single ear stepless hose clamps are made of 304 stainless steel. These clamps are anti-rust and corrosion resistant, a good choice for long-term use. Hose clamps are used to seal various types of hoses. Included pincer is used to increase clamp force. The jaws of the crimper are made of chrome vanadium steel, which is durable and will not collapse or deform. It is the perfect design for repairing pipes & plumbing systems. 2. Cochlear DesignCochlear design ensures continuous clamping during temperature changes, machine variations, or dimensional changes. The pipe is always in good sealing and fastening status. 3. Polished Smooth EdgeThe edge of all clamps are polished smooth, and they will not damage the hose. 360 ° Stepless Design, no inner protrusion/gap and Narrow band design provide a more centralized seal pressure. 4. COMPLETE SPECIFICATIONSThis single ear hose clamp set comes with 12 common sizes: 5.30-6.50 mm, 5.80-7.00 mm, 7.0-8.70 mm, 8.8-10.50 mm, 10.3-12.8 mm, 10.8-13.3 mm, 12.8-15.3 mm, 15.0-17.5 mm, 17.8-21.0 mm, 20.3-23.5 mm, 22.4-25.6 mm, 29.9-33.1 mm. They are widely used in hoses and plastic pipes, especially suitable for plumbing, beverage, automotive, marine, motorcycle, and industrial applications. One Ear Clamp Pincer is included in this kit. The pincer has a plastic coated handle, easier to use when sealing the hose.