The Custom Accessories Non-Slip Dash Wedge holds mobile devices such as GPS, MP3 players or phones on your auto dash. Weighted, anti-skid base requires no adhesive or tools. Just place it on the dash and insert device in the gripper slot for easy viewing.4 3/4"L x 4 3/4"W x 1 3/4"H. Insert device into gripper for a secure hold | Custom Accessories Inc Custom Accessories Non-Slip Dash Wedge