5 JJ----Shimano BB-UN300 BOTTOM BRACKET - STANDARD -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 -w/o fixing bolts -Adapter material: Aluminum. 1009904(014-023)5/1 22723(5:3/1/23:ARI 32023(20:3/24ar----1:rtn on 3/22/23---1:rtn on 4/10/23 121123(20:12/23:ari