Description: High quality: High pressure, oil-resistant, durable, wear-resistant, corrosion-resistant, do not harden. 2 oz A/C Oil Injector R134a R12; has a 2 oz. capacity and 1/2ACME shut-off adapter. This injector may be used to add most A/C additive to our system from oil, dye, stop leak, etc;suitable for filling up the automobile air conditioning refrigeration system of R134A(need to get help from a transfer tool), R12. It is no need to unhitch the inside the system (the system does not need in vacuum condition); the oil tank can be unscrewed.Refrigeration oil can be filled into the automobile air conditioning. Specification: Material: Aluminum Alloy + Copper Length: 345mm Working pressure: 600~3000PSI Capacity: 2 ounces Screw thread: 1/2"ACME outer thread(connects to oil tank)+1/2'' ACME inner thread(connects to tube) Package Includes: 1 Piece Car AC Oil Dye Injector Note: Please allow 0.5-1 inch difference due to manual measurement.(1 inch=2.54cm) Please check the size measurement and the picture carefully before making payment. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Please understand,Thank you.