Check the listing for details. 10 PCS - Wire Connection Socket Holder for GU10 LED Light or Hologen Light Bulb. Color: White, Condition: New. Listed at 9.99 USD. 10 PCS - Wire Connection Socket Holder for GU10 LED Light or Hologen Light BulbThe most important highlight of a GU10 LED bulb is that their size is the same as traditional halogens so they fit right into your current lighting fixtures. GU10 Wire Connection Socket Holder for GU10 Base Plug LED Light or Halogen Light Bulb Insulating Ceramic and Metal. Its high temperature resistant and energy saving accessory for economical consumption. Easy Installation: 1.One-step installation-Plug bulbs pins into the holes in the medium of sockets without using other tools. 2.Then screw the bulb. 3.Bulbs will be held tightly GU10 bulbs have a 2-pin connector with 'feet' at the bottom of each pin, the center of the pins are 10mm apart. The feet locks the bulb into place when is twisted in the lamp holder.Use this to fit any GU10 bulb into a hard wire system. It allows you to plug in your LED, CFL or Halogen bulb, and attach it to the normal lighting wire.