The item is a car mount holder, which is made of durable hard plastic material, and can be used to clamp GPS firmly with the help of an adjustable back clip. Besides, the back clip can be rotated by 360-degree for comfortable viewing. With durable structure and easy to use, it is really a wonderful car holder for choice. Features - Color: Black. - Material: Plastic. - Base Diameter: Approx. 2.2inch / 5.7 cm. - Ball-head Diameter: Approx. 0.67inch / 1.7 cm. - Suction cup car mount for GPS. - Strong suction car mount. - Easy to install on windshield/dashboard - Compatible with: 2457LMT 2497LMT 2557LMT 2577LT 2597LMT; 42 42lm 44 44lm 52 52lm 54 54lm. - Ball-and- style for and GPS angle adjustment. - Allow you to rotate your GPS 360°, turn left, right, and tilt up / down. - Detachable design: easy to install and remove. - Practical design, durable structure, and easy to use. Package list: 1 * Adjustable 360-degree Rotating Suction Cup Car Mount Stand Holder for GPSD (Black)