Feature 12 Inch 52mm tachometer gauge with super bright LED background light,The gauge dial and the needle pointer provide high visibility. 2Numbers and pointer clearly show the RPM. Blue light on the dial for easy reading in the darkness. 3Measurement range is 0-8000RPM. Features: 2 Inch 52mm tachometer gauge with super bright LED background light,The gauge dial and the needle pointer provide high visibility. Numbers and pointer clearly show the RPM. Blue light on the dial for easy reading in the darkness. Measurement range is 0-8000RPM. Suitable for 4, 6, and 8 cylinder. High sensitivity and easy operation. Used to measure the RPM of automobile engine. Note: It fits for gasoline engine, NOT for diesel engine. Specifications: Color: Black Material: Plastic Unit: RPM Measurement Range: 0-8000RPM Power: 12V DC, Max. 0.3A Tachometer Size: 5.7 * 6.5cm / 2.2 * 2.6in (max. diameter * height) Tachometer Weight: 117g / 4.1oz Package Size: 17 * 12 * 7.8cm / 6.7 * 4.7 * 3.1in Package Weight: 275g / 9.7oz Package List: 1 * Tachometer 1 * Hose 2 * Screws 1 * Gauge Holder Package List 1 * Tachometer 1 * Hose 2 * Screws 1 * Gauge Holder