They are a lot wider than the stock Swift bars (560mm centre to centre) which initially put me off them but in practise they work very well and allow a great number of positions to stave of stiff neck, wrist, shoulder etc. I have them linked to an adjustable stem which offers an even greater number of permutations. They do look a bit odd and bulky compared to the standard bars but they are light and give great control over the bike. I also have a bar end bell fitted (left hand bar end) which is a very handy gadget that does not require any bar space. The bars are made by Modolo who make several variations of the Butterfly design; the one I have is the only one I could find in the UK. If you like to travel any great distance on your Swift I can highly recommend them. All the Swifts brake and SRAM shifters fit without modification.