Two push fit Halogen G4 lamps rated at 12 Volts, 20 Watts.
Type G4 12 volt 20 watt halogen lamps. Supplied in packs of two.
Part number: WEL8031.
Please be careful when fitting halogen lamps, do not handle the glass "bulb" with bare fingers, the oils from your skin will drastically shorten the life of the lamp.
If you do touch the glass it will need cleaning with meths or some similar cleaning agent.