hot chilli":2vr9co3f said:10 mm looks about as low as possible..
where did you get that from?
I think i got it from a shop on Fleabay but it was quite a while ago, cost me about £23 but that was better than half price

CRC used to sell them.
**EDIT** they still do for £18.99

http://www.chainreactioncycles.com/Mode ... elID=24984