SunRace MFEX9 E-Bike Freewheel Cassette 9-speed - 11-32 - chrome plated / gold

9-speed freewheel-cassette with Fluid Drive Plus technology. The spider allows for replaceable cogs. For E-bikes with an compatible hub. material sprockets: steel sprocket finish: chrome plated material spider & spacer: aluminium (gold anodized) lightweight design 11-32T ratio: 11-12-14-16-18-21-24-28-32 Fitting for derailleur: 9-speed Material: sprockes: Hi-Tensil steel spider: aluminium spacers: aluminium lockring: steel Weight supplement: manufacturer's specs