Specifications: 1) Model 500JCA: CCA 2.77mm + foamed PE + Al tube 12.7mm + PE 12.2mm 2) Model 500JCAM109: CCA 2.77mm + foamed PE + Al tube 12.7mm + PE 12.2mm + steel messenger 2.77mm 3) Model 500JCASS: CCA 2.77mm + foamed PE + Al tube 12.7mm + flooding compound + PE 12.2mm 4) Custom requirements welcomed Explanation of abbreviations: 1) CA=copper clad aluminum 2) M=messenger 3) SS=flooded 4) J=jacket Note: Al tubes or welded Al strips available