Bakelite construction provides insulation and voltage strength for safe operation in demanding environments. Copper core enhances conductivity and offers exceptional abrasion resistance for longlasting use. Mirrorpolished surface improves shine and yields a smooth touch for precise, effortless handling. Quick installation can be completed by hand in seconds without tools or technical expertise, boosting work efficiency. Use scenarios: Electrical control panels and equipment enclosures in industrial or laboratory settings that require reliable insulation and quick knob adjustments. voltage systems where insulation and conductive performance are critical, such as test rigs or power distribution equipment. General machinery and instruments that require durable, easy to grip knobs for frequent manual adjustments.