Comparison : Item # 1-HK, Hydraulic Couplings, Series HK, 1-HK to 8-HK
Item # 2-HK, Hydraulic Couplings, Series HK, 1-HK to 8-HK
Item # 3-HK, Hydraulic Couplings, Series HK, 1-HK to 8-HK
Item # 4-HKP, Hydraulic Couplings, Series HK, 1-HK to 8-HK
Item # 6-HKP, Hydraulic Couplings, Series HK, 1-HK to 8-HK