Excellent method for adding refrigerant oil or large amounts of UV leak detection dye to the A/C system. Add oil by allowing vacuum to pull it in after the evacuation process, or use refrigerant to push it in using the recharge system. Rugged all metal 2 oz. canister. The standard models use a needle style valve attached between the manifold gauge set or charging equipment and A/C hose.
13mm-M x 13mm-F Low-Side Coupler (R134a).