Partsam 10pcs PC194 T10 Blue LED Bulbs Instrument Dashboard Lights 8-Epistar-3020-SMD With Sockets 5/8 Inch 16mm Hole Diameter T10 168 194 2823 2825 2827 W5W PC194 16mm hole 2496279 2973932 Color: Blue Led Type:T10 8-Epistar-3020-SMD Bulb socket fits a 5/8" or 16mm diameter hole.