Easy to install on windshield / dashboard The style of ball-and-socket for the clip and easy GPS angle adjustment Diameter of the base: Approx. 2.2 inch / 5.7 cm Ball diameter: approx. 0.67 inch / 1.7 cm Rotate your GPS 360 ° turn to the left, right, and tilt the top / bottom Material: plastic Color: black How to use: Insert ball at the back of the bracket Remove the protective film from the bottom Climb direct foot Cup to the windshield or dashboard Press then lock Compatibility: GPSMAP 62 s 62 62st 62sc 62stc， Dakota 10 20， Oregon 200 300 400 t 450 450 t 550 550 t 400 c 400i，Colorado 300 400 c 400i, 400T ， Approach G3 G5， 10 20 30 eTrex， Rino 610 650 655 T， Astro 320 package include: 2 x suction cup support Only the above package content, other products are not included. Note: Light shooting 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.