I recently had to run cables for lights and a fan through the ceiling and sides of a gazebo. This type of clip makes everything look good. However, since I know I need a few, local hardware stores will only sell you five clips for $4. They are made just as strong and I think the 3M glue is actually better. As you can see, the price per clip is only 0.17 instead of more than four times the price in the store. You get two sizes. One of the most useful and best buys I've come across recently and highly recommend.
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