Mityvac MV5530 Professional Compression Test Kit, Includes Everything Required for Performing Dry and Wet Testing on Gasoline or Petrol Engines , Black

Manual pressure release for maintaining peak readings Professional-grade threaded adapters for leak-proof seals Extended hoses for hard-to-reach applications Large, easy-to-read 2¾ in. (70 mm) diameter gauge Adapters fit engines as small as lawn mowers, chain saws and trimmers