The GreatNeck Wrecking Bar (18 Inch) with 5/8 inch diameter is used to pull nails and to pry apart wood. The nail puller head on the gooseneck end provides leverage for heavy pulling and the other end has a bent chisel head for prying. The wrecking bar is made of drop forged steel for strength for strength and durability, heat treated for corrosion resistance. Its hexagon shaped body allows more control.