Sturmey Archer X-FDD hub dynamo Specifications: Color: silver Material: aluminium Number of spoke holes: 36 Type: X-FDD Weight: 1220 grams Diameter: 9 mm Mounting width: 100 mm Axle length: 140 mm Suitable for 70 mm drum brake Suitable for 13 & 14 G spokes With 3.0W dynamo Including required parts