Description Selling an original, heavy-duty Optilux (by HELLA) Engine Compression Tester Gauge in great working condition. Optilux is a premium brand trusted by mechanics for its pinpoint accuracy and solid build quality, making it much more reliable than cheap, unbranded diagnostic tools. Specifications & Features:Brand: Optilux (Germany / Hella)Pressure Range: Dual scale reading up to 300 P. S. I. and 20 BARCompatibility: Ideal for all petrol engines (Cars, Bikes, Rickshaws, and Generators)Design: Features a heavy-duty flexible hose, solid brass fittings, and a built-in pressure release valve (green button) for quick multi-cylinder testing. Condition:Gently used, perfectly functional, and holds pressure accurately without any leaks.