Combo: This push suction pump combo comes with 2 straight suction tubes of different lengths in addition to the basic push suction pump set, as well as 1 each of 10mm and 8mm threaded fittings, and 1 each of 3/8’ threaded adapters to fit a variety of sizes of gear drain plugs. Material: the suction pump is made of high quality plastic, the connector adapter is made of aluminium, quick disassembly and precise connection, not easy to corrode, longer service life. Compatibility: This suction pump fits standard quart bottles with a cap diameter of 28mm, two straws, one long and one short, are suitable for quart bottles of different heights, and each pump has a stroke capacity of 8cc. Application: Suitable for daily maintenance and repair of all kinds of cars, motorbikes, ships and other means of transport. Warm Tip: If you receive a defective product or have any problems about item, please contact us, we will help you as soon as possible. High Material: The suction pump is made of high quality plastic, the connector adapter is made of aluminium. Attention: 1.please keep them away from little kids;2.If you receive a defective product or have any problems about item, Please contact us and we will assist you as soon as possible.