The Red Head 3/8 in. x 3-3/4 in. Wedge Anchor is a high-quality fastener made of zinc and alloy steel. With a fully threaded design and left-hand thread style, this anchor is perfect for securing large heavy-duty objects. Each set includes 10 anchors with a flat head style and exterior finish of zinc, metal, and steel. The package dimensions are 5.35x3.46x2.05 inches, and the item diameter is 4 inches. This product is ideal for various industrial and commercial applications where a strong and durable fastening solution is needed.