Ferrule Contact Finish Tin Contact Material Copper Ferrule Diameter 0.25 in Ferrule Material Copper Insertion Length 7/8 in Insulation Color Blue Insulation Material Polypropylene Maximum Operating Temperature 221 Degrees F Minimum Wire Size 6 AWG Maximum Wire Size 6 AWG Termination Style Crimp Standards CSA C22.2 No 291-14 DIN 46228 Part 4 Barrel Diameter 0.35 in Barrel Finish Tin Plated Barrel Length 0.43 in Barrel Material Copper