- Professional compression tester for gasoline engines in cars and motorcycles - Includes high-precision gauge, 16" extension hose, 4 brass adapters (M10, M12, M14, M18), and straight and curved rubber cone adapters - Compatible with most engines thanks to its universal adapters, no need to screw into the cylinder head - Gauge with dual scale: 0-300 PSI and 0-20 bar, ideal for precise diagnostics - Made of high-quality copper, resistant to oxidation and corrosion, with a protective rubber layer - Rubber seal for airtight closure and reliable measurements - Allows detection of wear, piston ring and valve leaks, and other common engine failures - Easy to use, the gauge holds the pressure until it is reset by pressing a button - Essential tool for the maintenance and repair of gasoline engines