This Campagnolo Chorus 102mm Bottom Bracket has three, sealed cartridge style, bearings; two on the chainring side and one on the non-drive side. Removable cups are machined from 7000 series aluminium alloy and are easily replaceable and weighs just 220 grams which is only 30 grams more than Record. With a 17 mm cro-moly steel, 102 mm hollow spindle that fits 8, 9 and 10 speed Campagnolo Record and Chorus cranks from 1995 to present. The taper is unique to Campagnolo and is not interchangeable with Shimano. Comes in British (1.37 inches x 24 threads per inch) or larger diameter, Italian cups (36 mm x 24 threads per inch).