The nut tightening type is removable. Just insert the core rod into the construction, so you can see the finish of the installation at a glance. The body and screw parts are the same diameter, so drilling into concrete is required. Can be installed directly from the top of the mount. Screw Nominal: M8; Total Length: 2.8 inches (70 mm); Thread Length: 1.0 inches (25 mm); Hole Diameter: 0.3 inches (8.5 mm); Tensile Maximum Load (kN): 0.2 inches (6.5 mm); Embedded Depth: 1.4 inches (35 mm); Mounting Thickness: 0.0 inch (1 - 25 mm); Weight: 1 oz (25 oz (25 mm); Weight: 1 oz (25 oz (25 oz (25 mm); Weight: 1 oz (25 oz (25 mm); Weight: 1 oz (25 oz (25 g); Box; Material: 1 mm); Material: 1 oz (25 mm); Material: 1 oz (25 oz (25 g); Material: 1 mm); Material: 1 oz (25 mm); Material: