23PC38-A Battery Booster Clamp, Jaw Type Parrot, Connection Type Clamp, Maximum Current 400 A, Maximum Voltage 12V, 24V, Maximum Jaw Opening 3 1/2 in, Contact Material Steel, Insulation Material Vinyl, Gauge 4 to 6 AWG, Number of Clamps 2, Color Black, Red, Includes Lead Jaw, Screw, Features Medium Duty, Overall Depth 3 3/4 in, Overall Length 6 3/4 in, Overall Width 1 in