The Replacement Blade for the Heavy-Duty Spud Bar by Tie Down Safety replaces the blade of the 3.5” and 7” Spud Bars. This product is made of hardened steel for a long life. The blade comes in the 3.5” and 7” sizes. The blade bolts onto the Spud Bar for heavy-duty construction. Tie Down maintains high standards and quality controls using quality raw materials and component parts made in the USA.