384 type 6 volt 21W/5W dual filament taillight stoplight bulb. This bayonet base bulb was used on virtually every British motorcycle (and car!) With 6v electrics up to the mid 1960’s. Sold as pairs.
Please note: Due the nature of the product, we unfortunately do not accept returns on bearings, service tools or electrical components. Please be confident about your purchase before ordering. If you have questions, please contact us.