Shimano Nexus DH-C3000-3N-NT Hub Dynamo 3W for V-Brake 36H + SM-DH10 Black

The Dynamo hub uses a bolt-on type axle.
 
designed for rim brake wheels
it produces 3.0 watts output at 6 volts
for wheel sizes from 16 to 28 inches.
stable performance
better durability
Made in: Indonesia
Axle Standard: Threaded Axle
Brake Type: Rim Brake
Number of Spokes: 36
Weight (g): 712.0