I have a set of Whal Bros extrovert (anti-ratchet) drivers mounted on a 1" Yamaha driveshaft. They are 9 tooth, 2.52" pitch. The drivers can be taken off and put on any 1" driveshaft.
http://www.wahlracing.com/product.p...1&click=srclick
$130 shipped in the U.S.
http://www.wahlracing.com/product.p...1&click=srclick
$130 shipped in the U.S.