The hose separator is aluminum, it's different from other plastic products which will pollute the environment, and you also ' need to use plastic tape to fix your line.Designed to be used with oil, , water hoses to keep them organized and Perfect for separating,isolating,and securing ,oil,and brake linesHose clamp securely holds 2 hoses,These clamps come with counter sunk Hex head screws for separating, isolating and securing , oil and brake lines.Colour: BlackMaterial: aluminum alloySize: 6AN6AN Hose Separator Clamp Inner Diameter: 0.51in. / 13mm6AN Hose Separator Clamp Outer Diameter: 0.71in. / 18mm6AN Hose Separator Clamp Length: 1.73in. / 44mmApplication:13 mm (0.51 inch) I.D (-6AN Stainless Steel / Nylon Braided / Rubber) Hose/LineIt will not suit for the -6AN Stainless Steel Braided PTFE (PTFE) HosePackage Contents:10x Hose Separator ClampsOnly 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.