This 30ft windmill features a 72 inch fan blade and a 92 ¾” square base. Made from aluminum with stainless steel hardware, this windmill will never rust. The blades turn on ball bearings that have grease zerts for easy lubrication. Some assembly is required and a 7/16” wrench is needed. Ground anchors are included. Ships truck line. Tower legs are 1" square tubular aluminum with a .090 wall thickness.