Shimano BB-UN300 Bottom Bracket - English 68 x 117.5mm Spindle Square Taper JIS Model=Chainring for GRX FC-RX600 } volume 2x20L ( 40

} volume 2x20L ( 40 liter) adjustable 3-point rear carrier fixation extremely durable material with welded seams handle

Color Black Ring Position/Type Outer Tooth Count 50 Drivetrain Speeds 10 Drivetrain Speeds 11 Chainring BCD 110 FSA ABS Material Aluminum Defined Color Black

110psi rated for maximum rolling efficiency

Tube Weight 181g Valve Presta Valve Length 42mm Shaft Type Non-threaded Tube Width 42-62c Wheel Diameter 700C

Shimano BB-UN300 Bottom Bracket - English 68 x 117.5mm Spindle Square Taper JIS Model=Chainring for GRX FC-RX600 } volume 2x20L ( 40Shimano BB UN300 Bottom Bracket English 68 x 117. 5mm Spindle Square Taper JIS. Shimano BB UN300 Square Spindle Bottom BracketsFits JIS square taper cranksets Crankarm fixing bolts sold separately Hollow spindle TECH SPECS Bottom Bracket Shell I. D. 1. 37 BB Frame Interface English BB Shell Width (mm) 68 Spindle Interface Type Square Taper JIS Spindle Length 117. 5 Defined Color Black