Sealing test, firm, compact and portable. Suitable for DIY minor maintenance, or the oil addition exceeds the extraction part. characteristic: hose is easy to use. Negative pressure , easy compression. Scope of application: this model can be used to pump engine oil, but not to pump brake oil/gasoline and other substances. Application industry: maintenance of automobiles, motorcycles and engineering vehicles., Weight: 0.84437046346 pounds, Manufacturer: Xnuiasqe