Our Spud Wrenches are Forged from select alloy steel to withstand high-leverage and heavy loads. The Extra heavy-duty head on area the Spud Wrench gives maximum strength and durability. Our Spud Wrench handles have a Continuous taper which makes lining-up bolt holes easy and works on a range of bolt and/or hole sizes without binding. The Extra-large hub area on our Spud Wrenches works more effectively on larger diameter holes than other Spud Wrenches. Bolt size and nominal opening size are stamped on every Spud Wrench for easy identification. American Bridge design.