Red Carpoint semi-insulated M4 ring connector 535. The diameter of the inner ring is 4.3mm. Suitable for a wire diameter of 0.5-1.5 mm². The ring connector has a length of 20 mm. With these connectors, wires are clamped under screw heads. Ring cable lugs are designed for very fine-stranded conductors. They are usually used for smaller cross-sections. To clamp this connector, use the Carpoint Terminal Crimping Tool (item number 0678506 or 0641005). The connectors are supplied per 10 pieces in a blister pack.