Medium l-angle z-max. The ML angle combines strength and versatility through the use of Simpson Strong-Tie Strong-Drive screws (SDS). Fastener holes are staggered to minimize wood splitting and opposing hole patterns allows for back-to-back installation without fastener interference. 12-gauge ZMAX steel. 2" W1 x 2" W2 x 4" H., install with 6-SDS 1/4" x 1-1/2" screws