Operation confirmed Removed from a bicycle stored in a garage. Hapyson 6V hub dynamo YRH001, made of durable aluminum. Power saving type, 2-terminal output ・Adopts high-grade aluminum alloy Product specifications Rated 6v-0.8W Weight approx. 540g Color: Aluminum color Number of spoke holes: 36H / 28H:14G Shaft BC 5/16; L=145mm Lock nut interval: O.L.D. 93mm Applicable wheel diameter: 26" standard - Brand: Hapyson - Model: YRH001 - Voltage: 6V - Purpose: Hub dynamo Removed from a compatible 27-inch bicycle. Operation was confirmed before removal. This is a used item, so please only purchase if you understand this.