Hyde Black & Silver Professional Flexible Hammer Head Joint Knife, 4 in. is crafted from the same high-quality materials as the Black & Silver putty knives, ensuring durability and reliable performance. This tool features a full tang construction and a patented handle design for enhanced strength and comfort during use. The hammer head is conveniently built into the handle, allowing you to easily set drywall nails without needing an additional tool. This joint knife flexibility and practicality, making it an essential addition to any professional or DIY drywall project. Model Number: