"The Ironton 16in. Adjustable Spud Wrench is great for iron work. Features chrome vanadium steel construction with black oxide finish to resist corrosion. Tapered end of wrench helps with aligning holes. Jaw Capacity in. 1 1/2, Material Type Chrome vanadium, Tool Length in. 16, Pieces qty. 1, Finish Type Black oxide. Chrome vanadium steel Black oxide finish resists corrosion Tapered end helps with aligning holes Adjustable wrench opens up to 1 1/2in."