Panduit MPMWH32-D0 Masonry Push Mounts are used to secure wire, cable or tubing to masonry surfaces. They install quickly into pre-drilled holes, using a fir tree hold mounting method. Are 01.41” x 0.28” (35.8mm x 7.1mm) in size and require a hole diameter of 0.31” (8.0mm) for mounting. For use in indoor and outdoor environments and with miniature through heavy cable ties as well as hook and loop mount cable ties. Made of impact modified Weather Resistant Nylon 6.6, are black in color and come in packages of 500.