High Precision Single Ear Stepless Hose Clamps Narrowband design providing a more concentrated sealing pressure Material: 304 stainless steel, Stainless steel with superior rust resistant long lasting results 360 degree Stepless Design - There Is No Protrusion And space In The Inner, Narrowband Design Providing A More Concentrated Sealing Pressure Cochlear Design Ensures Continuous Clamping During Temperature Changes Or Machine Vibrations, Edge Polished Smooth, Avoid Damage To The Hose Sizes: 7-21mm Type: Single Ear Stepless Hose Clamps Color:silver Material:stainless steel Package Contents: 25x 5.8-7.0MM hose clamp 23x 7-8.7mm hose clamp 20x 8.8-10.5mm hose clamp 15x 10.8-13.3MM hose clamp 15x 12.8-15.3mm hose clamp 15x 15.3-18.5mm hose clamp 15x 17.8-21mm hose clamp Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.