When you need navigation to find your way, or simply the melody of a favorite song to pass the miles, the Iron Horse by Maxam® Adjustable Motorcycle/Bicycle Phone Mount is a must have. Works for most phones, PDAs, GPS, MP3 players, and other mobile devices. Features 360° swivel lockable joint, easy release button, foam padded ratcheting clamps, secure mounting clamp, and ABS construction. Holder measures 2-1/2" x 4-1/4" x 1-1/2". Holder expands to 5-1/8".