The Excalibur Flat Finishing Box is designed to dispense exact amounts of joint compound and feather edges of butt and flat joints in a single operation. This tool ensures professional results each time, and the adjustable crown setting dial allows for simple adjustment of compound coverage on drywall joints. The box's pivoting axle compensates for uneven surfaces, and all replaceable parts are compatible with major competitors' models and sold at lower prices. An Excalibur flat box handle is required to use the box.