This is a high-quality professional engine and oil pressure test kit. It is used to diagnose worn oil pumps and engines, faulty oil pressure switches and pressure warning indicators. It has a shock-proof dual scale gauge for quick and accurate oil pressure check. Also, it has quick coupling adaptors with a built-in shut-off valve. The flexible hose enables users to have access to hard-to-reach oil switch ports. Made of high-quality material, this tool set is very durable. The kit is delivered in a blow molded case for easy storage and transport.