The TLED-4X40AS includes four functions: stop, turn, tail, and a strobe LED light. It is protected by a polycarbonate lens which is resistant to cracks and damage and D.O.T compliant to strobe function all in one. First ever 4″ LED with 4 Pulse strobe function!Industry leading dual revolution technology19 DiodesD.O.T compliant to strobe function all in oneClear lensPolycarbonate lens resistant to cracks and damageSold individually3 year warranty