Check the listing for details. Drywall Flat Box 10" Blade Holder Assembly - 254002. Condition: New. Listed at 139.00 USD. Replacement Drywall Flat Box 10" Blade Holder Assembly This 10" Brass Blade Holder will fit on TapeTech, Drywall Master & NorthStar 10" Flat Boxes. Very easy to replace. If you have any troubles, please feel free to give us a call. Part #:TapeTech- part #254002Drywall Master- part #10FF-26SNorthStar - part # FFB-37-10 Al's Taping Tools is the Largest Drywall Tool Store in the World! We are also a fully equipped automatic drywall tool service center with over 30 years in the industry. We service all major brands. All of our service techs are also fully trained in the operation of the tools that 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