This 12-piece professional oil pressure tester set is ideal for the diagnosis of worn oil pumps and engines, faulty oil pressure switches and pressure warning indicators. Equipped with a special rubber cap, the tester has a maximum measuring range of 10 bar. The flexible hose enables users to access hard-to-reach oil pressure switches. Made of high-quality materials, the tester set is very durable. Including an oil pressure tester, quick coupling connector and 10 adapters, this tool set is suitable for most engines. The set is delivered in a blow-molded carrying case for easy storage and transport.