Description They are LED bulb NOT tungsten bulbEasy to stall with Predrilled holes and wireSpecification Type Boat LightColor RedGreenMarine Material Grade 316 stainless steel housingLens Material PolycarbonateDegree 112 5 degree for individualVisibility 1nmBoat Size about 6mSize 61mm Diax41mm HWeight approx 130g Note 1 We provide clear pictures measurements where possible Please check as much as possible to make sure the item is the one that you need 2 Please allow 0 5 1 inch difference due to manual measurement 1inch 2 54cm 3 Instruction is not included professional installation is highly recommended Package Included 1 X Red Led Boat Light1 X Green Led Boat Light