Recommended for semi-permanent mounting of items that are infrequently moved. Need to install outdoor security cameras, solar lights. Mount a first aid kit behind the door. Need to get the job done quickly no worries set it and forget it. ALFA-LOK® fasteners pack super strong holding power into mere inches of hook-to-hook engagement. Two sets of 3 x 1 in strips can hold as much as 15 lb of weight. VELCRO® Brand ALFA-LOK® fasteners omni-directional hook-to-hook fastener works like a charm even in extreme conditions and because they are omnidirectional, you can easily mount cameras, lights, sensors and solar-powered accessories indoors or out. No tools required. On a broad range of surfaces. Apply to a clean, dry surface, allow the adhesive to set and snap, you’re done. ALFA-LOK® fasteners are strong enough for outdoor, vertical applications even in extreme temperatures. They will hold fast through rain, snow and sweltering heat while supporting up to 2.5 lb/sq-in, not to exceed 15 lb. The snap tells you it’s securely fastened.