Snap-on's new Master Fuel Injector Pressure Set, No. EEFI500, contains a tee manifold with shut-off valve and a 3 1/2" diameter gauge assembly with a blow down valve, including the new adaptors needed to test most fuel injection systems. A convenient lid label shows an image of components, part numbers and applications for quick and easy ID and storage. An optional quick connect, No. EEFI50030, allows the set to work with prior EEFI sets and multiple adaptors on the market.