These 3mm Aluminum anchors securely mount to any reasonably flat surface, even textured fiberglass, such as those found on many pop-up campers, trailers, conversion vans, and Jeep Wranglers. Our super-sticky 3M VHB backed anchors work where suction cups and magnets won’t, forming a semi-permanent (they won’t come off until you remove them, basically) anchor that you can clip your MoonShade or Moonshade XL corner carabiners to. They are also designed to work with a strut pole for mounting along the short edge. These anchors work great for tall vehicles, vans, or RVs without roof rails. The anchor height allows for easier access to anchor your MoonShade or MoonShade XL with our tall-connect cords, so once you set them into place, you don’t need access to the roof to set up or take down your MoonShade. Product Specs Material 3mm Aluminum Total Height 1.7" Total Length 4 " Total Width 3 " Adhesive Area Width: 3 " Adhesive Area Length 2.25 " Weight: 3.2oz (90g)