Tighten the parts by squeezing them into place, so please use them in places without thinking of removing them. Features: Overlaps the riveted holes through the rivet and bite the other end by transforming the plastic into the other. It is more prone to excessive stress such as welded fittings on the joints. Made of aluminum, it is lightweight and has excellent processing. [How to use] Tighten the parts, so you can use it in places without thinking about removing it. Excellent corrosion resistance.