ThinkRider Freehub Cassette Body for Thinkrider X7 X5 X2 Cycling Trainer Shimano 11 Speed 12 Speed SRAM XD XDR Freehub

ThinkRider Freehub Cassette Body for Thinkrider X7 X5 X2 Cycling Trainer Shimano 11 Speed 12 Speed SRAM XD XDR Freehub

Aliexpress UK