Feature: 1. The fine tip can slide past weather pack seals to probe connectors. 2. As acupuncture probes, they are used for piercing the insulation of wires to allow for automotive electrical measurements without causing damage to the wires. 3. They can be used as pin-tip probes while working with small circuit boards. 4. The set of 5 probes also comes with 20 replacement pins, there\u0027s no need to replace the whole probe. 5. Its small diameter, extra sharp pin makes it ideal for piercing the insulation on small gauge wires. Specification: This acupuncture probe is a back pinning, piercing and repairable probe. This set includes 5pcs complete acupuncture probes, 2pcs screws, and 20pcs replacement needles. Features: The fine tip can slide past weather pack seals to probe connectors. As acupuncture probes, they are used for piercing the insulation of wires to allow for automotive electrical measurements without causing damage to the wires. They can be used as pin-tip probes while working with small circuit boards. The set of 5 probes also comes with 20 replacement pins, there's no need to replace the whole probe. Its small diameter, extra sharp pin makes it ideal for piercing the insulation on small gauge wires. Specifications: Probes Color: Black/Blue/Yellow/Red/Greem Acupuncture Probes: 5pcs Replacement Needles: 20pcs Complete Probe Length(1pc): 65mm / 2.56in Length of Pin: 37mm / 1.45in Package Size: 12 * 7.5cm / 4.72 * 2.95in (L * W) Package Weight: 23g / 0.81oz Package List: 5 * Complete Acupuncture Probes 2 * Screws 20 * Replacement Needles Package List: 5 * Complete Acupuncture Probes 2 * Screws 20 * Replacement Needles