These are lights I use on my trailers and truck beds, but you can use them anywhere you want to be seen! They put out a very intense, "crisp" light that looks good and is very visible, even in the day time. At night they are very "noticeable"

They have a 10 year life (100,000 hour!) No more bulbs that burn out at the worst time (and you always put off replacing) LEDs are rated for 100,000 hours compared to 3,000 hours for incandescent bulbs. Consider real world circumstances where more incandescent bulbs need to be replaced within one year. An LED light will last years before needing a replacement. 

Also, remember that LED bulbs use very litle current, so you can install as many of these as you want and not worry about a system overload (only 50 milliamps, or 1/20th of one amp!) LED's are very energy efficient and consume less up to 90% less power than incandescent bulbs. This reduces the load on your electrical system including your battery, alternator, and power converter resulting in direct money-saving benefits.

 These are grommet mount, requiring a 4.5" hole to mount "into". They provide a easy method to install quaility LED lights and include the rubber mount grommet and plug pig tail wire to install. If you currently have the 4"  "sealed beam" lights, these are a direct replacement for you!