SB-packed, square taper (12.73 mm), BSA thread 1.375" x 24, 68 mm shell width, durable, maintenance-free, weather-resistant. Left bearing cup with functional shoulder (FS), shaft made of specially hardened material (ML treatment), Certification: ISO 4210-8 (MTB). Optimal rotation quality thanks to double-sealed deep groove ball bearings, galvanized steel sleeve for bottom bracket protection, Composite A bearing cup, including 2 hexagon socket screws with polyamide patch coating and circlip, Installation note: Tightening torque cup: 25-30 Nm (installation without grease); Tightening torque screws: 42-45 Nm, Made in Germany Axle length 113.0 mm Axle standard ISO Type Item Design square taper Main color black Bearing type industrial bearing Secondary color silver Bottom bracket standard BSA Bottom bracket shell width 68 mm