Check the listing for details. USG Sheetrock MATRIX 12" Stainless Steel Drywall Taping Knife - PRO QUALITY!. Condition: New. Listed at 36.49 USD. USG Sheetrock MATRIX 12" Stainless Steel Drywall Taping Knife The Sheetrock Matrix™ Drywall Finishing Knife incorporates a new design with an enlarged hammer - for those who prefer a more modern look and heavier feel to their drywall tool. FeaturesEnlarged hammer for striking and writingTapered neck makes the tool easy to maneuverSlip-resistant comfort soft gripRust-resistant bladeAl's Taping Tools is the Largest Drywall Tool Store in the World! We are also a fully equipped, family-owned, and operated automatic drywall tool service center with over 35 years in the industry. We sell and service all major brands of automatic drywall taping and finishing tools. All of our service techs are also fully trained in the operation of the tools we sell and service. So if you are new to automatic drywall tools or have any questions, please give us a call or send us a message. We are here to help. Al's Taping Tools & Spray Equipment815 Tower DriveMedina, MN 55340