High Precision Single Ear Stepless Hose ClampsNarrowband design providing a more concentrated sealing pressureMaterial: 304 stainless steel, Stainless steel with superior rust resistant ensure long lasting results360 degree Stepless Design - There Is No Protrusion And space In The Inner, Narrowband Design Providing A More Concentrated Sealing PressureCochlear Design Ensures Continuous Clamping During Temperature Changes Or Machine Vibrations, Edge Polished Smooth, Avoid Damage To The HoseSizes: 7-21mmType: Single Ear Stepless Hose ClampsColor:silverMaterial:stainless steelPackage Contents:50x 5.8-7.0MM hose clamp46x 7-8.7mm hose clamp20x 8.8-10.5mm hose clamp30x 10.8-13.3MM hose clamp30x 12.8-15.3mm hose clamp30x 15.3-18.5mm hose clamp30x 17.8-21mm hose clampOnly 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.