Check the listing for details. Columbia 4" Flat Applicator Head. Condition: New. Listed at 85.00 USD. Columbia 4" Flat Applicator Head These Columbia Flat Applicators are a top quality tool from Columbia Drywall Tools. Made from a solid one piece of high-grade aluminum for durability. The anodizing gives the tool long-lasting protection from corrosion. It will fit will all major brands of compound tubes or corner boxes. Step up to Columbia Tools.Durable Stainless Steel Runners4" Wide footprint is perfect for laying tape and coating drywall seams Mud Reservoir for the perfect bead of materialFits onto a Compound Mud Tube or Angle Box Al'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