Specification AgeRangeDescription : adult Brand : ROUPWKWO BulletPoint1 : *This pump is a double-acting pumping and pumping bidirectional reciprocating pump. BulletPoint2 : *The pumping pressure reaches 6.7*10 to the power of 3Pa, and the pumping pressure reaches 2.9*10 to the power of 3Pa. BulletPoint3 : *The reciprocating pumping of the piston in the cylinder produces two functions of pumping and pressing, which can be pumped and pressed continuously by reciprocating through the valve. BulletPoint4 : *It's good physical teaching tools, easy to undestand and handle. Great experiment toy. BulletPoint5 : - We promise you best support service and money back Please contact us directly if you have any question. Color : One Color ExternallyAssignedProductIdentifier : 7636986933129 ItemName : ROUPWKWO EDZP02 Air Pump with Brush Electronic Starter, Pressure Vacuum Pump Used for Medical Instrument Motor ItemPackageDimensions_Height : 1 centimeters ItemPackageDimensions_Length : 3 centimeters ItemPackageDimensions_Width : 2 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : science-lab-pumps Manufacturer : ROUPWKWO ModelName : ROUPWKWO ModelNumber : ROUPWKWO NumberOfBoxes : 1 NumberOfItems : 1 PartNumber : ROUPWKWO ProductDescription : ROUPWKWO