Ferrule Contact Finish Tin Contact Material Copper Ferrule Diameter 0.13 in Ferrule Material Copper Insertion Length 17/32 in Insulation Color Gray Insulation Material Polypropylene Maximum Operating Temperature 221 Degrees F Minimum Wire Size 12 AWG Maximum Wire Size 12 AWG Termination Style Crimp Standards CSA C22.2 No 291-14 DIN 46228 UL 486F Barrel Diameter 0.19 in Barrel Finish Tin Plated Barrel Length 0.3 in Barrel Material Copper