HINZIC 4 PCS Flexible Back Probe Pins, Bendable PVC Multimeter Needle Probes with 4mm Banana Socket Plug, Wire Piercing Probe for Car Test Black Red Size: Length is 3.93inch/100mm, stainless steel probe pin size: about 0.03inch/0.7mm. Wide Application: Using applications include back-probing harness connectors, automotive sensors, electrical, industrial and more, which could perfectly fit on many multimeter connectors. Excellent After-Sale Service Our shop values customer shopping experience and provides you with high-quality after service.