Feature: PVC and ABS plastic durable and environmental friendly. Manufacturered by AppleLand. Light sensation and dynamic sensation without switch only works when wheel in dark or action. Suitable for E/VF/V and A/V. Unscrew the British valve to fit the Schrader valve. This is a great signal valve cap light it provides safety visible features for drivers to see other cyclists at night and the pumpkin lamp image is agreeable for decoration.