The flexible stainless steel hammer head joint knife from Hyde Tools is the contractor’s joint knife of choice, providing a blade with desired flex point for applying and smoothing drywall compound and taping joints. This high quality black and silver joint knife is made with a rust-resistant stainless steel, full-tang blade and durable nylon handle. The unique Hammer Head end is designed for resetting popped nails and screws. Lifetime guarantee. Comes in five blade widths.