OTCs 5605-DG Deluxe Digital Compression Tester Kit offers a complete package for compression testing on gasoline engines. Measure, record and playback compression readings on up to 12 cylinders for quicker testing and diagnosis. Easy to read 2-1/2" digital gauge features backlit LCD and rugged protective outer boot. Gauge features a measurement range of 0-300 PSI and 0-2100 kPa - also displays in bar and kg/c. In addition to more common adapters, this versatile kit includes the deep well connector used on recessed plug well style heads and the Ford Triton engine adapter using 16 mm thread plugs. All metal components feature a corrosion resistant nickel plated finish. Adapters work on both flat and tapered seat plugs. Extra long 26" flex hose with quick coupler allows easy viewing out of cluttered engine compartments. Kit includes: 12 inch flex 14mm standard reach adapter, 12 inch flex 14mm long reach adapter, 8 inch deep well 14mm adapter, 5 inch flex Ford Triton 16mm adapter, 10mm, 12mm, 18mm adapters. Rugged blow-molded hard case with removable lid keeps kit components contained and organized when not in use. Includes repair parts kit. Works on gasoline engines including domestic, import, motorcycle, marine, snowmobile, ATVs, and small engines. Digital gauge powered by 9V battery (battery not included).