The car cup holder is made of ABS plastic. Size: 10 x 8 x 6cm / 3.93 x 3.14 x 2.36. Inner diameter of the support: 6.7 cm. Can stably place mobile phones and drink from car ventilation systems at the same time. Drinks are cooled by ventilation in summer (when the air conditioner is running) and keep warm in winter. Wide range of application for beverage cans, coffee cups, water bottles, coffee cups, etc.