I have a couple of the single led lights linked to initially. I recently bought a lathe with a different type fitted. In my view it's better than the other type. This is one from it's range. There are others.
http://www.ikea.com/gb/en/catalog/products/90152447/
The lamp on the lathe uses the bulb shown in the link and is the version with the base but it's removed. it's then held in a length of split copper water pipe plus a jubilee clip. At this height it lights the whole lathe up easily. The lathe is around 18in long. I'd guess there are more powerful led bulbs around of the same style and also different light spreads.
I'd be happier still if the flexible end was longer.

John
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Edited By John W1 on 01/07/2015 14:58:51