Descriptions:This is a high quality TU-21 cylinder leak detector, including double gauge system, 2-1/2" input pressure gauge, snap-on quick connect male connector, gauge scale 0-100PSI, 10mm, 12mm spark plug adapters, air regulator and carry case.Features:Designed to detect a variety of common engine faults such as worn piston rings, cylinder head cracks, worn valves and blown head gaskets.It checks the amount of leakage in an engine cylinder and helps determine the source.Designed to check the amount of leakage in 4-stroke engines.Deal for testing trucks and car models where clearance is minimal.Fit for all local and imported cars and trucks.Specifications:Condition: 100% Brand NewMaterial: Rubber, hardwareColor: Red (Shown as picture)Size: Shown as pictureSpark plug adapter: 10mm, 12mmGauge scale: 0-100PSIPackage Weight: Approx. 1836gPackage List:1 * Set of Leakdown DetectorNotes:1. Please allow 0-2cm error due to the manual measurement. Thanks for your understanding.2. There might be a bit color distortions due to different computer resolutions..