Features: Easy-to-read instrument panel with dual units (0-300psi, 0-21kg/cm). Acrylic glass gauge cover with anti-scratch coating and rubber protective cover for outstanding shock-absorption performance. Checking compression on petrol engine quickly and accurately. Easy pressure release button on side of tester. Professional-grade threaded adapters for leak-proof seals. Extended hoses for hard-to-reach applications. With 31cm/12.2'' long hose, M14x1.25mm, M18x1.5mm connector, 15cm/5.9'' long tapered adapter with rubber-head. Specifications: Material:Carbon Steel Note: Please allow 1mm errors due to manual measurement. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1Set Compression Tester