Tapetech MudrunnerThe TapeTech MudRunner delivers joint compound to corners with precision control and minimal effort. A simple twist of the wrist activates the piston and creates a consistent flow of joint compound. Twist it back and the flow stops immediately. Use it with TapeTech Corner Finishers to quickly achieve high quality, finished internal corners or with Mud Heads to apply compound to internal and external corners when installing paper faced corner bead to