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Continue to ChatLight Bulb - 56V 20W, Single Contact, Blue - BLB7800 - PBC3076F1 - https://www.giobikes.biz/express-parts-catalog/lights-and-light-bulbs/light-bulb-56v-20w-single-contact-blue-blb7800-pbc3076f1
Light Bulb - 56V 20W, Single Contact, Blue - BLB7800 - PBC3076F1 - https://www.giobikes.biz/express-parts-catalog/lights-and-light-bulbs/light-bulb-56v-20w-single-contact-blue-blb7800-pbc3076f1