Extended Quick Clean Design for Easy Cleanup. The Drywall Master Pump has an exclusive milled-in O-ring design that prevents mud from slipping between the head casting and tube. Other pumps on the market dont have this feature, and suffer from tubes that are difficult or impossible to remove after extended use or inactivity. Tubes that dont come off stop being easy clean. Drywall Master Pumps are built right, so you can be sure that your pump tube will detach - no matter what the conditions are. Features: Made In USA Quality; Clamped Pump Tube for Easy Removal and Clean-up; Milled O-Ring Pump Head for Easy Tube Removal; Fits All Major Brand Box Filler and Gooseneck Fittings (sold separately); 5 Year Drywall Master Warrantee.