Bullet Lines Illuminated LED Cup Holder Rings are the brightest rings on the market. We use SMD 3528 super class LEDs which provide 16 individual LEDs per foot: this makes our cup holder rings the highest density available today. Only premium polished acrylics are used for our rings, and water proof high force viscose is applied to attach LEDs to acrylics. Our incredible selection in LED ring sizes allows use to fit almost all cup holder sizes. These rings are plug in play: just slide cup holder rings on your stainless steel or plastic cup holder, wire, and you are done. Super easy and inexpensive way to add LED bling to the inside of your boat.