BBB BDP-01 Rollerboys Bicycle Jockey Wheels 10T Shimano 7/8s Campagnolo 8/9/10s

Teeth: 10T, Color : Black. Compatible With: Shimano 7 & 8 speed; Campagnolo 8, 9 & 10 speed;. Made of: Grivory EMS. Composite material provided by EMS Swiss, with 40% glass-fibre mixture.

eBay