Diamondback 225R Floor Pump. The DiamondBack 225R floor pump ensures tire inflation is a quick, easy, and straightforward task each and every time. Firstly, this pump features absolute rock solid construction with a steel main barrel as well as a welded steel base. Its dual PrestaSchrader head automatically adjusts to either valve while a thumb lock closure seals to the deal for trouble free inflation. The 40 hose provides plenty of flexibility and room for getting to your tire valve and the large, 3 diameter needle gauge makes it easy to see the desired pressure.