SD8 Small Dynamo HubFront - 6V-3W - 9mm QRDisc Mount100mm OLD, for 20" WheelsBlack or SilverOutput: 6v 3W using 20" wheels    6v 2.4W using 26"/700c wheels
Collect-in-Store for Stomp Ebox, Wired, ACDC, and many more items available for collection