DescriptionMade of high-quality and sturdy carbon steelmaterial, it can serve you for a long time without being easily damaged. Reasonable design makes it evenly stressed, not easy to skid, and more efficient. It can also be used in humid places, strong and durable.Features-Color: As shown -Material: Carbon steel - The expansion screw is a solid structure with a large bearing capacity and strong tensile strength. - Widely used for heavy-duty facilities, easy and convenient to use, easily meet your different needs. - This heavy-duty expansion bolt for wall building is suitable for concrete masonry, solid brickwork, ceiling, doors, windows, rain sheds, home decoration, engineering, etc. - This expansion bolt must be installed on a relatively hard base plate for ensuring stability. - High-quality ca rbon steel , sturdy and firm, resistant to rust and corrosion, long term use.