Check the listing for details. TapeTech 14TT MudRunner®. Condition: New. Listed at 963.86 USD. The 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 drywall. The MudRunner® holds 50% more joint compound than a standard 8" Corner Applicator and 70% more than a 7" Corner Applicator. Applies compound to external corners for paper faced bead application (with 16TT) Applies compound to inside corner for tape application (with 16TT90) Finishes internal corners (with corner finishers) Features Holds 50% more joint compound than a standard 8" Corner Applicator and 70% more than a 7" Corner Applicator Twist grip flow control Extended reach versus standard corner applicators Much easier to fill and operate than a "syringe"