These stainless steel expansion bolts are engineered for fastening in concrete and masonry. The sizes are suitable for a wide range of applications, from securing to installing heavy equipment. The internal expansion mechanism provides hold, while the hexagon socket design facilitates easy installation and removal, making them a practical choice for both temporary and permanent fixtures. Features -Color:Silver -Material:Stainless steel -Size:8.50X0.80X0.80cm/3.34X0.31X0.31in -Size:6.80X1.00X1.00cm/2.67X0.39X0.39in -Durable construction: made from stainless steel, these expansion bolts are built to last -Simplified installation: the builtin bolt design makes installation , eliminating the need for additional tools and saving time -Heavy duty performance: the internal expansion sleeve provides hold, ideal for heavy duty applications and ensuring safety -Efficient: the external hexagon head design allows for easy tightening and loosening, enhancing work efficiency in various installations -Versatile applications: available in various sizes, these bolts are suitable for a wide range of applications, including construction, machinery, and electronics Package list: 20 x expansion bolts