ZB07 Green/Yellow/Red/Black 3.25x 0.25 x 0.25 Mini BackProbe/WirePierce Adjustable test probe: The wire piercing probe is designed with a twist lock function, which can free your hands during use and is suitable for piercing cables with a diameter of less than 4mm. High-quality materials: The piercing probes are made of stainless steel and PA nylon materials, with excellent sensitivity, accuracy and stability. Probe tip replacement: The wire piercing probe is equipped with a piercing test hook cover, which is suitable for reverse detection of wiring harness connectors and sensor wiring. 4MM banana jack connector: The end of the piercing probes is designed as a 4mm standard banana socket, which is compatible with all 4mm banana plug leads and adopts a reverse piercing mode to achieve better piercing effect. Wire protection: The wire piercing probe can perform contact testing without cutting or stripping the insulation layer, effectively protecting the wires during the test process.