Wheels Manufacturing Sealed Bearings ABEC 3 Sealed Cartridge Bearing MR 18307 18x30x7mm Steel 2pcs ModelNumber=K2306 }Promax SQ-1 Crank Arm Set

}Promax SQ-1 Crank Arm Set - 150mm Square Taper JIS Spindle Interface 110mm BCD Gold

}Full Speed Ahead Pro Road Chainring - 52t 110 BCD Aluminum N11 Black

} Slick Wire Pro cable and housing kits for both road and mountain bike usage

Clearance for 24 x 6

Bolt Mount Diameter 9

Wheels Manufacturing Sealed Bearings ABEC 3 Sealed Cartridge Bearing MR 18307 18x30x7mm Steel 2pcs ModelNumber=K2306 }Promax SQ-1 Crank Arm SetThe Wheels Manufacturing sealed bearing units are very first quality replacement part, and fit most hubs currently in use. TECH SPECS Bearing Dimensions 18x30x7mm Number MR 18307 Material Steel Bearing Grade ABEC 3