Sturmey-Archer S2C Internally Geared Hubs with Coaster Brake 2-Speed internal gear hub with direct drive or 138% drive ratios. Kick shift between gears without shifters or cables. Polished and anodized aluminum hub shell. Color: Silver. Weight: 1395. Hub Drilling: 36. Cassette Body Type: 3 Prong Cog. Bearing Type: Loose Ball. Hub Center to Flange: 26.9 R. Hub Center to Flange: 29.7 L. Skewer Included: No. Defined Color: Silver. Spoke Interface: J-Bend. Rear Axle: 13/32" Threaded x 116mm. Drivetrain Speeds: 2. Flange Diameter: 67 R, 67 L. Hub/Brake Compatibility: Coaster Brake.