do you mean an A head stem for a threadless headset? This is a 1 1/8th, you just use a reducing shim http://www.ebay.co.uk/itm/ETC-A-Head-7-Degree-1-1-8-Bike-Cycle-Handlebar-Stem-/270958347963?pt=UK_sportsleisure_cycling_bikeparts_SR&var=&hash=item3f166046bb
@chris_gee started
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do you mean an A head stem for a threadless headset?
This is a 1 1/8th, you just use a reducing shim
http://www.ebay.co.uk/itm/ETC-A-Head-7-Degree-1-1-8-Bike-Cycle-Handlebar-Stem-/270958347963?pt=UK_sportsleisure_cycling_bikeparts_SR&var=&hash=item3f166046bb