Certified A/C Pro Air Conditioning R-134a Can Tap. This product makes it easier than ever for the DIYer to dispense a small can of refrigerant while using a manifold gauge set. The features a Heavy-Duty metal construction, easy to active screw valve. This model is designed for EPA compliance. This product is designed for compliance and to work with only R134a cans with self-sealing can tops. Product Features:Reusable R-134a can tapDesigned for use with maniforld gauges and hosesHeavy-duty metal constructionEasy-to-activate screw in valveDesigned for compliance and to work only with R-134a cans with self-sealing valve can tops