Kuryakyn 2507 Torpedo Chrome LED Light With their torpedo shape these E.C.E.-approved lights combine both style and function in one! Multi-function versions are designed for rear use only and feature three independent red and amber circuits that allow the units to serve as Run-Turn-Brake lights. All versions measure 70 mm long x 45 mm in diameter (2.75" x 1.75"), have clear lenses and utilize M10 - 1.5 mm x 25 mm mounting studs to allow for easy mounting. -&gt; Sold as a pair. Notes: Some applications may require use of a load equalizer (sold separately).