The anchor bolt uses 304 stainless steel, which is waterproof, corrosion resistant, never rusts and durable. Expansion screws can be used in concrete and masonry. They are suitable for mounting blinds, fixing air conditioning, interior decoration, industrial engineering, etc. The bolt has a very high load capacity. Easy to install, drill a hole in the wall, insert the expansion screw into the hole, and tighten the expansion bolt nut outside the hole in the wall. Expansion screws are widely used in household and office equipment, fences, security doors and windows, awnings, air conditioning shelves, interior decoration, industrial furniture, inventions home repair and renovation, construction fasteners, etc. Principle of use: expansion is created by tightening a threaded bolt, which causes the sleeve to expand until it forms a counter hook in the walls. Material: 304 stainless steel Size: M8 Total length: 60mm Diameter of the expansion tube: 11.5 mm Contents: 6 expansion bolts. How to