Forever Suction Hooks Work on Glass Tiles Metal Vacuum Suction Hooks. You can always use more hooks for hanging items in the garage on a boat or RV. These handy hooks serve as temporary or permanent fixtures on many surfaces with a red warning indicator ring letting you know when you're losing suction power. Get hooked! Works on glass mirrors tiles metal frosted glass painted and grained wood paint plate antique bricks painting board PVC Board. The hooks come in 3 sizes 2 large 1 medium and 1 small hook. Load 10 lbs Silver Set Of 4 Each hook can...