ITEM NAME:10pcs MR11 MR16 G4 GU5.3 Wire Connector HalogenLED Bulbs Holder Base Sockets Description&Preview.Use this to fit any MR16 or MR11 bulb into a hardwire system. It allows you to plug in your LED bulbs and attach it to normal lighting wires. 5pcs x MR16 MR11 Socket Base plug. Round ceramic base, two Silicon tier.