JTC Fuel Injection Test Set, JTC TOOLS # 1225. Designed for testing injectors. The kit includes a 3 – 1/2? Gauge with dual readings of 0 – 145 psi and 0 – 1000 kPa. All adapters, gauges, and hose assemblies features a quick coupling system for easy testing connection. The unique designed relief valve relieves pressure and allows control of sufficient fuel flow. No need for wrenches or pipe dopes required. Complete with reliable plastic blow-molded case.