This is a great upgraded set, contains 20 pcs, and a must have for Diesel work. Includes most popular adapters for injector and glow plugs and additional also newer adapters for TDI, pumpe düse and common rail systems. This tester has a handy deflator for releasing air & re-testing, wire reinforced hydraulic hose that has a quick coupler on a swivel for ease of connection. It has a 2-1/2" gauge, protected with silicone against damage, with easy to read red scale. Records pressures from 0-1000 PSI and 0-82 bar. Made in Germany !