Hunza GU10 fittings are not supplied with bulbs/lamps. If you wish to use LED, only ones approved by Hunza should be used as other brands may not fit and lead to water ingress which will invalidate the product warranty.
The Hunza Step Light Eyelid has been designed to be installed in the side wall of outside steps.
Moonlight Design recommends that all lighting should be installed by a registered NICEIC electrician
Always ensure that luminaires are fitted with a Hunza approved lamp (bulb) and re-assembled correctly as failure to do so will affect the IP rating of the fitting and invalidate the product warranty.
NB: Under no circumstances should fittings be installed without a lamp (bulb)