Size: 4pcs M8x100mm expansion bolts, total length: 100mm, expansion tube diameter: 67.5mm. Thread diameter8mm. Weight: 195g The bolt has a very strong load capacity and can withstand a weight of 100kg Material: Expansion bolts are made of 304 stainless steel, 304 stainless steel has excellent resistance to corrosion. rust, corrosion and good corrosion resistance crystals. Wear-resistant, glossy surface, long-term durability, anti-rust, anti-corrosion, anti-breakage. Works well in humid indoor and outdoor environment Installation Instructions: The expansion tube is made by tightening a bolt. The bolt draws a tapered taper to extend the sleeve against the wall of the hole. 1. Drill a hole in the wall. 2. Clean the sand and dirt in the hole. 3. Insert the expansion screw into the hole. 4. Use a wrench to tighten the expansion bolt nut outside the wall hole. Wide Application: Hex expansion bolts can be used in concrete and masonry. They are suitable for installing awnings, installing water heaters, fixing air conditioning, fencing, security doors and windows, interior decoration, industrial projects, workshops, garages , etc. expansion bolts.