Comparison : |
Item # 21F4M, Straight Coupling Medium Pressure Fittings Item # 21UF4M, Union Coupling Medium Pressure Fittings Item # 21F6M, Straight Coupling Medium Pressure Fittings Item # 21UF6M, Union Coupling Medium Pressure Fittings Item # 21F9M, Straight Coupling Medium Pressure Fittings
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