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REFCO, 3 & 4-WAY refco manifolds, Replacement Knob, Set, M4-7-SET-B+N+R+Y:
$39.95
KNOB SET.
CONTAINS BLUE, RED, YELLOW AND BLACK COLORED INSERTS.
Spare KNOBs for THE REFCO REFRIGERATION GAUGE SET.
for the 3 & 4 Way Manifold SERIES
As pictured.