This oil pressure tester kit includes a gauge, hose, clamp and adapter. It enables technician to test exhaust back pressure through oxygen sensor adapter. Features: Heavy duty gauge with protective rubber housing. 2.5'' diameter gauge with dual colored scale. Pressure readings in psi and bar. Oxygen sensor adapter includes M12 & M18 threads. Blow moulded carrying case for easy transportation and storage. Specifications: Case Color: Red Material: Plastic & Metal Case Size: Approx. 32.5 * 27 * 6cm / 12.7 * 10.6 * 2.4in Case Weight: Approx. 1150g / 2.5lb Package List: 1 * Back Pressure Tester Set