The 3/8 in. 1-Hole Conduit Straps (10-Pack) are designed for securing AC/BX cable with a range of 0.475 to 0.580 to wood, masonry or other work surfaces. Also cable sizes 14/3 in., 14/4 in., 12/2 in., 12/3 in., 10/2 in., and 10/3 in. They are made of galvanized steel and are quick and easy to install.