Closed-End Crimp Connector, Color Clear, Insulation Material Nylon, Maximum Operating Temperature 221 Degrees F, Maximum Voltage 600 V, Minimum Wire Combination (2) 18 AWG, Maximum Wire Combination (2) 12 AWG, Contact Finish Tin, Contact Material Brass, Standards CSA C22.2 No 65, UL 486C, Barrel Inside Diameter 0.16 in, Compatible Grainger Part Number 376U11, 38YU61, Compatible Installation Tool Model Number CT-1550, CT-1551, CT-2500/L (CT-2550CH), Compatible with Series CT