The vibration resistant male disconnect tab is made of copper and is nickel-plated.It is fully insulated in a yellow, nylon housing. It has a tab size of 0.250 x 0.032" (6.3 x 0.8 mm) and supports a wire range of 12-10 AWG (4.0-6.0 mm²). It is 0.96" (24.4 mm) long and 0.22" (5.6 mm) wide. The disconnect has a standard barrel configuration and a butted seam barrel. It comes in boxes of 500. .. see full description