The Drywall Compound Pump PROFESSIONAL GRADE by LEVEL5 has been developed with over 20 years of feedback from experienced finishers. It features a Urethane cup seal that outlasts traditional rubber seals, as well as a precision molded flapper valve and seal assembly to prevent pump priming. The composite top handle bushing also reduces bearing wear. The pump comes with a FREE filler and a built-in wrench for easy switching between the filler valve and gooseneck. Plus, it has been laboratory tested for 250,000 cycles without any need for replacement parts or repairs. And as always, LEVEL5 offers an industry-leading 7-year warranty for all of their taping and finishing tools.