3 inch Vacuum Mounting Cup with a 1" ball offers a great solution for mounting a variety of lightweight equipment when used with RAM® mounting accessories.
You can mount your GPS unit, PDA, cell phone, fish finder or virtually any lightweight equipment that adapts to a 1" polycarbonate ball, accepts a 1/4-20 threaded stud or adapts to a 1/4-20 tapped insert when used with the appropriate RAM® accessories..
The powerful 3 inch vacuum cups will attach to autos, RV's, boats, windows, counter tops, windshields ... anything with a smooth, nonporous surface.  The RAM® accessories give you the latitude to adapt the mount to your application needs.

Features of the 3 inch Vacuuum Mounting Cups
Provides a reliable, temporary vacuum mount, without drilling holes.
Rubber vacuum pad will not mark or damage most surfaces.
When used with RAM® accessories, mounts GPS systems, PDA's, cell phones, or any lightweight equipment.
Cup comes with a 1" polycarbonate ball.
Attaches to flat or curved, smooth, nonporous surfaces.
Metal accessory mount.
Durable construction.
Red-line indicator warns user of any vacuum loss.
Check valve allows re-pumping without loss of remaining vacuum.
Lift tabs on pad edges permit instant release.
Supplied with pad protector.
Vacuum Pad: Concave, 3" [8 cm] diameter (model TL3)
Minimum Radius for Curved Mounting Surface: 4" [11 cm]
Load Capacity: 15 lbs. [7 kg] per cup
Manufactured by Wood's Powr-Grip® Co., Inc.