NOS 16220NOS Nitrous Bottle Nut Adapter with Washer<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Adapter fitting is a 1" female to -4AN male threads</li><li>Made from steel with a nickel plated finish for durability</li><li>Facilitates easy plumbing of the nitrous system</li><li>90-day limited warranty</li><li>Keeps contaminants out of your nitrous system</li></ul></div><img src="http://ecx.images-amazon.com/images/I/41K2OUkcSTL.jpg" noproxy>