When you need to attach a wire to a stud – a battery terminal, a grounding bolt, or a power distribution block – a ring terminal is the right choice. The QUADRIOS 22C446 provides blue ring lugs for 1.5-2.5 mm² wire. Crimp the barrel onto stripped wire, then slide the ring over the M4 stud and tighten the nut. The ring will not pull off, even under vibration.

The blue insulation indicates the wire gauge range. The 4.3mm hole fits M4 screws (4mm diameter) and also works on 4-40 or #8 studs. The copper barrel is tin-plated for corrosion resistance, and the PVC insulation provides electrical isolation. Use these for DC power distribution, battery connections, alternator output wires, or any permanent termination where a spade or quick-disconnect would be insecure. The bag contains 100 pieces – plenty for a vehicle rewire or solar panel installation.