Wire piercing test probes for quick, reliable electrical measurements. Each probe is black, sized 19.5X1.5CM, with copper conductors and PVC insulation plus a rubbercoated surface for a secure, comfortable grip. Key benefits Test live or insulated wires without stripping: piercing tip punctures insulation and clamps the conductor, avoiding cable damage. Hands convenience: the clampstyle piercing holds the wire so you can focus on readings. Broad compatibility: 4mm standard banana socket at the probe end fits all 4mm banana plugs. Reliable conductivity and durability: copper conductor ensures accurate signal transfer. Improved puncture performance: reversing the piercing orientation can enhance penetration on some cables. Product details Color: Black Size: 19.5X1.5CM Conductor material: Copper Insulation: PVC with rubbercoated grip Compatible cable diameter: suitable for cables with diameter less than 4mm Connector: 4mm standard banana socket What you get Package includes 2 test probes Typical applications Automotive and vehicle electrical diagnostics where access to insulated wiring is limited Appliance and equipment troubleshooting when you need to measure circuits without cutting insulation Field and workshop use with multimeters and test instruments that accept 4mm banana plugs Notes Use with instruments that accept 4mm banana plugs For piercing effect, try the opposite orientation of the tip depending on cable type