The Madi Tri Square Big Wrench is a versatile tool designed specifically for lag bolts with 1/2” square heads. With the ability to fit 5/8”, 3/4”, and 1/2” square heads, this wrench is perfect for various sizes of bolts. The Madi brand ensures quality and reliability for industrial and electrical applications. This wrench is a valuable addition to any toolbox, making tasks involving lag bolts more efficient and convenient.