Compression Tester Kit, Tool Type Compression Tester Kit, Testing Application Compression Testing, Number of Pieces 10, Features 2 1/2 in Digital Gauge Features a Backlit LCD and Protective Outer Boot, Adapters Work on Both Flat and Tapered Seat Plugs, Nickel Plated Finish, Displays in bar and kg/c, Measurement Range of 3-300 psi and 0-2100 kPa