Vacuum cooling liquid filling function: The pneumatic vacuum cooling liquid filling device first uses the workshop air to the cooling system and form a vacuum, and then sucks the cooling liquid into the cooling system. (Vacuum pump is required, not included in the). It takes 5- to fill, depending on the size of the water Antifreeze filling tool: The antifreeze filling includes a universal cone-shaped rubber adapter, which is suitable for almost all types of vehicles. The adapter can replace the cover to seal the cooling system and connect with the quick connector on filler to help fill the antifreeze. Coolant vacuum filling: The high- body covered by is anti- and durable. The indicator range of the pressure gauge 30~0inHg (-76~0cmHg), usually -25~-20inHg is the right time to add coolant. The rubber resin material braided and reinforced hose is corrosiresistant, high-pressure-bearing, durable, and . Accessories: The coolant also includes a coolant filling hose and a -drain hose, which are transparent and easy to observe, and are also equipped with corrosiresistant and durable brass fittings. The blow-molded enclosure secures everything and protects the meter during storage. The operation is simple and saves time. Note: Plastic box styles are random , don't accept the specified Tips: The product may be updated constantly ,Due To Different Batches, The Actual Product May Have Slight Differences Or Color Differences, Which Does Not Affect Use Colour:Black Material:plastic Package Contents: 1 Set x Vacuum Purge Coolant Refill Tool Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.