Features: The C channel metal has 7 holes and can be bolted to wood, 1/4" is recommended, which can accommodate M6 bolts and can be successfully fixed with a regular drill bit. The live edge wood bracing delivers outstanding performance whether you're looking to construct new structures, resort old ones or reinforce existing installations. Specifications: Material: steel Color: black Size: about 32 x 3 x 3/4 inch Package includes: 4 x C channel steel support Notes: Manual measurement, please allow slight errors on size. The color may exist a slight difference due to different screen displays.