Size 2"? 20" Volts 12/24 Highly efficient, the LED T-top light offers long 100,000-hour operating life with virtually no drain on batteries. It's generous 18' of safe, shielded cable is ideal for use on tops, bridges and towers of all sizes. Polished anodized housing is pre-drilled for easy hook-up and is an attractive addition to any top. Red/White lights enable you to switch from white to low glare red light ideal for night time chart reading.