Shimano STANDARD BOTTOM BRACKET, BB-UN300, SPINDLE: SQUARE TYPE, SHELL: BSA 68MM, SPINDLE: 127.5MM (D-EL), W/FIXING BOLT

SHIMANO quality/performance cartridge bearing square bottom bracket
Better chainline stability with chain line stabilizer
Series: Shimano Tourney TX800 Series
Fits JIS square-taper cranksets
Hollow spindle
Crankarm fixing bolts sold separately
Adapter material: Aluminum