Ball-and-socket style for easy and GPS angle adjustmentAllow you to rotate your GPS 360, turn left, right, and tilt up / downBase Diameter: Approx. 22inch / 57 cmBall-head Diameter: Approx. 067inch / 17 cmSuction cup car mount for GPS Strong suction car mountEasy to install on windshield/dashboard Material: PlasticColor: BlackHow to Use: Insert ball-head to the back of the holderRemove protection film from the bottom of cupuleMount cupule of foot-rest direct towards windshield or dashboardPress then lock itCompatibility: Nuvi 2457LMT 2497LMT 2557LMT 2577LT 2597LMT Nuvi 42 42lm 44 44lm 52 52lm 54 54lmPackage Contents: 1 * Suction Cup Only the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.