You will never be confused on determining which switch controls which because of the fan and light bulb design. Perfect Size: The fan shaped pull chain measures 5.2cm x 1.5cm and has a 12.5 inch extension. The light pull measures 4.1cm x 1.5cm with a 13.6 inch extension. High Quality Material: Made from copper, our pull chains are exceptionally durable and resistant to rust. Versatile Use: These pull chains are a great replacement for extension pull chains and can be used for ceiling lights, ceiling fans, desk lamps and more. Dedicated Customer Support: Reach out to our team anytime with issues, and we'll respond within 24 hours to help resolve your problem.