• Set for testing cylinder compression pressure on gasoline engines
• Provided with mostly common used spark plug adapters, sizes are M10 × 1.00, M12 × 1.25, M14 × 1.25, M16 × 1.50, M18 × 1.50
• Includes aluminum test tubes, fitting in-line and V-shape engines
• Rubber tube equipped with an enhance locking design, preventing the adapter from being left on the spark plug hole when disconnecting the rubber
tube
• Made In Taiwan