Carviya 2.1A Waterproof Motorcycle USB Car Charger Power Port Socket Bracket Mount 12V-24V 2FT Cable (Black) The design like a cigarette lighter greatly satisfies charging requirements. Suitable for all 12/24V vehicle installed. Material of black clinker much more waterproof and wearing. The brand new support being convenient and practical can be installed through mounting holes or be fixed directly. The motorcycle charger is a great device to have and can also be used to charge other devices with the appropriate USB cable. The hole diameter is about 2.5CM, Car charger fuselage length 7CM.