Mastercool (82375) Silver R134A Oil Injector<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Sturdy Aluminum construction</li><li>Add oil/dye to R134A systems</li><li>1/2" acme M x 1/2" acme F (134A)</li><li>In line use with manifold gauge set</li><li>Refrigerant push in or vacuum pull in</li></ul></div><img src="http://ecx.images-amazon.com/images/I/31DTWbm6IWL.jpg" noproxy>