Zurn RK1-375BOF Blow Out Flush Kit<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Blowout/Flush Fitting， Large Cartridge O-Ring， Small Cartridge O-Ring， Lube</li><li>For the 1" Wilkins 375 and 375XL series double check assemblies</li><li>Designed to remove water from the device and lines for easy winterization</li></ul></div><img src="http://ecx.images-amazon.com/images/I/4149L-EksEL.jpg" noproxy>