Check the listing for details. USG-Sheetrock Sheetrock 8" Classic Stainless Drywall Taping Knife. Condition: New – Open box. Listed at 15.00 USD. The USG-Sheetrock Sheetrock 8" Classic Stainless Drywall Taping Knife is a high-quality taping tool designed for professional drywallers. With its sturdy stainless steel construction and 8" blade length, this knife is perfect for smooth and efficient taping. The Sheetrock brand is known for its reliability and durability, making this taping knife a must-have for any drywall project.