Package Includes: there are 2 pieces of wire piercing probes in the package, enough to meet your daily uses and replacements, in case of its wore or missing. Sturdy Material: this piercing clip set is made of quality plastic, which is sturdy enough that it won't break or deform easily, assuring your long term use if stored well. Appropriate Size: the insulation piercing test tool measures 9.6 x 1.96 cm, and can be applied to most test probe pens. Easy to Use: plug the wire piercing probe into the banana jack, then use the probe to clip the wire, and then use a voltmeter to measure the voltage. The piercing clip set can release from insulated wires without piercing the insulation, and can meanwhile measure the voltage. Wide Applications: these wire piercing clips can be applied for car maintenance, equipment maintenance and home appliance maintenance, etc., helping you complete voltage measurement work. Feature: Nice texture, strong and wear resistant, suitable for long term use. Help you complete voltage measurement work quickly and easily. Applied for car maintenance, equipment maintenance and home appliance maintenance, etc. Able to contact with insulated wires without cutting or stripping insulation. Specifications: Color: red+black Weight: 40g/pc material: plastic Package includes: 2pcs*Insulation Piercing Clip