The single wire DIN end sleeve insulated ferrule in blue has a funnel entry for faster insertion and lower installation cost. It is intended for American Wire Gauge (AWG) #14 (2.5 mm²) wire ferrules and supports a maximum wire insulated diameter of 0.17" (4.2 mm). The insulated ferrule is 0.59" (15.0 mm) long and has a wire strip length of 0.469" (11.9 mm). It comes in standard packages of 500. .. see full description