Campag recordchorus bbt 5 high strength steel fits record chorus and athena cartridge bottom bracketscampag star cup bbt 4 fits cartridge cups used on sachs campagnolo veloce mirage and avante also thun skf series cartridge bottom bracketsshimano cartridge bbt 22 fits shimano cartridge bottom brackets including octalink versions fits isis drive cartridge bottom brackets 38 inch ratchet drive or a 32mm spannershimano hollowtech ii bbt 9 fits hollowtech ii race face x ty