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This is a basic refrigerant charging and checking kit: an SF5050 gauge head plus a 36-inch charging hose. The gauge reads R-12, R-22 and R134a, so one tool covers older and current systems. The hose has a 1/4-inch female flare at each end, one straight and one angled at 45 degrees with a valve core depressor. It suits DIYers topping up a home AC or car system who already know how to read low-side pressures; it is a single gauge, not a manifold set, so it cannot read high and low sides at once like a two- or four-valve manifold.
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This kit includes a Check & Charge-It gauge (SF5050, FJC 6128) and a 36" charging hose. The gauge reads R-12, R-22 and R134a. It has a 1/4" male flare hose connection.
The 36" charging hose has a 1/4" female flare connection at each end. One end is straight. The other has a slight 45-degree angle and an internal valve core depressor. The straight end has no valve core depressor and doesn't need one.
