Specification: Brand new Probes color: red, black, yellow, green, blue Probe length: Approx. 65mm (2.56 inch) Guide foot length: Approx. 37mm (1.45 inch) Feature: Come with 20 pcs replacement needles. The fine tip can move the weather pack seals to the probe connectors. It can be used as a pin-tip probe when working with small circuit boards. Its small diameter, very sharp pin makes it well suited for piercing insulation on small wires. As acupuncture probes, they are used to pierce wire insulation to allow electrical measurements in automobiles without damaging wires. Easy to use. Durable to use. Note: Please allow 1-3mm errors due to manual measurement. The item color displayed in photos may be showing slightly different on your computer monitor because monitors are not calibrated same. Package Included:5pcs x Probe20pcs x Spare Needle