Quick Ratchet Wrench Set

An expansion bolt is a tool used to fix objects. Its design allows the expansion mechanism to increase the contact area with the substrate during installation, thereby improving the fixing force. An expansion bolt usually consists of a bolt head, a bolt body, a bolt tail, an expansion part inside the bolt, and a fixing hole at the bolt tail. During installation, first drill a hole in the fixing body with an impact drill, then install the bolt and expansion tube into the hole, and tighten the nut to expand the bolt, expansion tube and fixing body into one. After tightening, the large head at the tail of the bolt will drive the pipe to expand, achieving the purpose of fixing. Expansion bolts are widely used in construction, engineering and other fields. They are special threaded connectors used to fix air duct supports, hangers, brackets, etc. on walls, floors or columns.