Box was opened but pump is new. Instructions missing. The Pittsburgh Automotive 96677 Air Vacuum Pump is a quality product designed for use in automotive air conditioning systems. With R134A and R12/22 connectors, this pump ensures compatibility with various refrigerants. Manufactured in China, this OE/OEM part is a reliable choice for maintaining the performance of your vehicle's cooling system. Perfect for car enthusiasts looking for a durable and efficient air vacuum pump for their vehicle, this product from Pittsburgh Automotive is a valuable addition to any car or truck maintenance routine.