Stuart 17 Comments If you buy something through our links, ToolGuyd might earn an affiliate commission. Our friends over at Scotch sent over a big goodie box of their Dual Lock self-closing Extreme Fasteners. Scotch also makes hook-and-loop cord wraps and other such products, but today I wanted to focus on their Dual Lock fasteners. For instance, these Dual Lock Extreme Fasteners are only available with PSA pressure-sensitive adhesive backing, while Velcro strips are also available with sew-on backs.
This useful material, especially in its self-adhesive form, is an old RVer's standby. But Velcro has a few drawbacks. It isn't very strong—you don't want to mount anything that weighs more than a few ounces with it, unless you use a lot of Velcro. And its self-stick adhesive can lose its bond in hot weather.