Quality material: Made of PVC and stainless steel; It is abrasion and corrosion protection, and is still strong after sun and rainGood performance: Roughen back side and clean with solvent prior to gluing for good results; Good performance and great sun protection is the nice choiceEasy to use: It only takes a few simple steps to install; Put the appropriate glue on the back of D-ring patch to the place where you want to install, hang things you need on it after a while; It is easy to install and convenient to useWidely applicable: This PVC Inflatable Boat attachment kit is suitable for roof racks, trailers, tarpaulin, boats, kayaks, caravans, DIY, indoor and outdoor products and many other general usesize:11cm in diameterMaterial:PVC+Stainless Steelcolour:blackPackage Contents:6 * D-Ring PatchOnly the above package content, other products are not included.Note: Light shooting 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.