This Adjustable Hook Spanner wrench is made of drop forged steel and has steel jaws. It has a maximum capacity range of 2” through 8-1/4” and features an Industrial Black finish. The wrench can accommodate multiple nut sizes and the pins are designed to fit into holes or slots on the side of a flange or collar. It is commonly used for tightening shafts or pipes and is specially designed with an adjustable opening feature for servicing packing glands, adjustable collars, rings, locknuts, and more.