3 inch Vacuum Mounting Cups offer a great solution for mounting a variety of equipment.
You can mount your GPS system, PDA, cell phone, fish finder...virtually anything that adapts to a 1/4-20 threaded 3/8" or 5/8" stud.
These powerful 3 inch vacuum cups will attach to autos, RV's, boats, windows, counter tops, windshields ... anything with a smooth, nonporous surface.

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.
Mounts GPS systems, PDA's, cell phones, anything with a standard 1/4-20 thread
Cup comes with a 3/8" or 5/8" threaded stud.
Attaches to flat or curved, smooth, nonporous surfaces.
Metal accessory mount with threaded stud for attaching equipment
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" (102mm)
Load Capacity: 15 lbs. (7kg) per cup
Manufactured by Wood's Powr-Grip® Co., Inc.