The package contains: 60 black and red alligator clips (5 amps), 30 of each color; with an insulated and thick bayonet protection cover and screws, in sufficient quantity. Strong conductivity: The alligator clip is made of metal with smooth nickel-plated surface, which is rust and corrosion resistant, with good electrical conductivity. Size and Specification: Overall dimensions 5 * 2.5 * 0.5cm / 2 * 1 * 0.2in, jaw width: 15mm / 0.6in (max), the long handle has a 4mm hole in the clip to insert wire. Solid jaws: Small, serrated clips with thick springs have a good grip and can be held firmly in place for long periods of use without deformation.Multi-function: Ideal for home, school, automotive, lab electrical test work, DIY soldering assistants, household soldering tools and electrical test tools.