Boat Marine RV Trailer Auto Stainless Steel 12V Lighted Cup Holder - Blue LED Lighted Ring High polished 304 grade stainless steel for superior corrosion resistance LED illuminated ring with blue LED. Noise reduction pad included LED technology offers a long product life and reduced energy consumption IP66 rated, watertight LED strip. UV stable LED ring 3.625 installation cutout. Simple installation with VHB adhesive tape