Campagnolo chorus square taper bottom bracketitalian quality and craftsmanship are at the core of this iconic name in cycling componentry world champions and tour de france winners have relied on the quality and effectiveness of campag products for many years three sealed cartridge style bearings two on the chainring side and one on the non drive side weighs just 220 grams only 30 grams more than record 17mm cro moly steel 102mm hollow spindle fits 8 9 and 10 speed campy record and chor