Wire range and tab size stamped on the surface for easy interpretation; Terminal barrel has butted seam; Serrated barrel provides excellent electrical contact & resistance to pull-out forces; 167°F (75°C) 300 Volts max; Maximum electric current: 22 AWG - 3 Amp, 20 AWG - 4 Amp, 18 AWG - 7 Amp, 16 AWG - 10 Amp, 14 AWG - 15 Amp, 12 AWG - 20 Amp, 10 AWG - 24 Amp; cULus listed