The fuel pressure tester has all necessary fittings to attach to any kind of pressurized system; Will work on most vehicles which has a Schrader test port fuel injection system or you can splice an inline connection The Fuel pressure tester can quickly indicate if fuel pump is defective or inconsistent in pressure flow and set to your motor / car, get accurate readings in valves, piston rings, cylinder bores or head gaskets Easy to install and get the pressure readout. Durable plastic blow-molded case to protect components and provide easy transport and organization Provide with accurate readings?0-140PSI? Made of high quality material (Brass, Steel, Rubber, Plastic), rugged and long-lasting, the size of all Fittings is in the instruction below