8 piece gasoline engine cylinder compression tool kit. Gas engine cylinder pressure gauge 0-300 PSI automotive tool. New kit, opened and displayed for these photos. Included in the Lit: 1 × Cylinder Compression Gauge 1 × Straight Rubber Cone End 1 × Curved Rubber Cone End 4 ×Metal adapter : M10, M12, M14, M18 1 × 14" Extension Hose 1 × Carrying Case 1 × Instructions