I've seen these on eBay, and can't work out where they'll go, or how they'll work. Any ideas.
http://www.ebay.co.uk/itm/CNC-19MM-...70?pt=UK_Motorcycle_Parts&hash=item3a7e15fd3e
http://www.ebay.co.uk/itm/CNC-19MM-...70?pt=UK_Motorcycle_Parts&hash=item3a7e15fd3e

