From the horses mouth:

360 Degree high quality Universal PDA Holder
No extra tools needed, easy to install
Firmly stick on the Windshield and could remove easily
With Quick release button for PDA holder
It comes with adjustable side-grip support arms and a flexible pedestal
PDA /IPOD/ GPS users can securely attach to any vehicle's windshield easily
The flexible arm can be adjusted to any angle for easy viewing.
Color: black
Inner width:1.4 to 4 Inches. Inner depth: 1.2 Inch

GET IT HERE