✅ Dual-scale compression tester marked 0~21 kg/cm² and 0~300 PSI, clear reading for accurate cylinder pressure testing on petrol engines ✅ Equipped with 50cm flexible pressure hose plus 2 test tubes (straight pipe + angled pipe), easy to reach tight engine compartments for all-angle detection ✅ Comes with four threaded adapters: M10×1.0, M12×1.25, M14×1.25, M18×1.5, widely compatible with most car and motorcycle spark plug ports ✅ Complete all-in-one test kit with full accessories and durable plastic storage case, convenient for storage, carrying and long-term workshop repeated use ✅ Essential diagnostic tool for professional mechanics and DIY users to check engine cylinder condition, ideal for auto workshop and roadside vehicle repair.
