Useful if you're swapping out MR16 downlights to GU10. Cheapest I've found @ 42p/holder.
I've got 50 MR16 Aurora downlight which need swapping over to GU10 so I can replace the bulbs with LED bulbs. Fortunately the downlight come with a decent connection box/etc so I just need the lamp holder and tails.
Thought i'd post this in case anyone else is in the same position.
Before you buy, pull down and check your existing downlight to ensure:
1) Make sure you can pull out the transformer not just the fitting. In my case the Aurora downlights came with individual transformers and I ensured the electrician wired them so all could be pulled out. However, on older installs sometimes theres just one transformer, or the electrician hasn't thought to wire the transformer(s) so they can be removed.
2) The transformer is not wired directly to the MR16 lamp holder. Since you'll be removing the transformer, if this is the case you'll need something like this instead: GU10 Lamp holder
3) The existing connection/junction box is suitable for mains voltage connection. Some cheaper MR16 downlights don't, as the connections after the transformer are low voltage.
4) If you have a dimmer check the min load and also that its trailing edge (presuming you're doing this to switch from Halogen to LED lamps).
If anyone has found a cheaper alternative I'm all ears :)