This pair of test tools can easily pierce the power cable. With special spring mechanism design, it is easy to use. With 4mm socket, it is convenient to connect with multimeter testing probe. Widely applied to vehicle maintenance, electrical test or industrial test. Practical tool for vehicle maintenance, electrical test or industrial test. It is convenient to connect with multimeter testing probe. Color:As Shown Material:Plastic+Metal Package Contents: 10 * Spring Test Probe Tips Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.