特别在哪里呢?自己看图
Features
* Heat treated steel
* One piece hollow construction: PowerDome Technology
* OpenGlide technologie for quick and accurate shifting: tooth are removed from the cogs
* 155g in 11-23
* available in 11-23 et 11-26
Comments:
* The PowerDome technology allow a very light cassette while keeping durable and resistant steel cogs
* Recommanded chain: SRAM PC1090R, PC1090 et PC1070
* The lightest steel cassette!
* Allow the compatibility between Campagnolo shifters and a Shimano freewheel