Anchor Expansion is wear-resistant, anti-corrosive, and has a high rust resistance, making it appropriate for use inside and outdoors, even in humid environments. Stainless steel expansion sleeve bolts are strong and reliable and resist rust and corrosion. Expansion Nuts and washers are included with bolts. Simple to attach concrete and masonry anchors. Expansion bolts are frequently employed in fence construction, air conditioning rach fixing, house décor, engineering, burglar-proof doors and windows, and canopy construction.