4.5 Inch Rubber Vacuum Suction Cup with Polycarbonate Accessory Mount (4.5" Suction Cup with M6 Female Thread)

How to use: Clean the rubber pad and object to be sucked Put rubber pad face to object, press suction cup onto object then press white plunger a few times. When red warning line inside, you can mount your equipment now. CAUTION: Make sure smooth mounting surfaces are clean and as free of dust as possible to insure that it grips firmly. Recheck Pump every 90 minutes. If the red line is visible, Re-pump the cup without losing the remaining vacuum, till the Red Line disappears.

• This 4.5" Suction cup mount base provides a super grip on almost any smooth nonporous surface including countertops, glass, metal and more. Mounts on cars, boats, rvs and many vehicles.
• Super Strong Hold: The top of the suction cup base included an integrated M6 female thread, eliminating the need for drilling holes when mounting equipment. The power Mount cup can carry a capacity of up to 22 lbs.
• Wide Application: Available in a range of styles to cover most applications and capacity requirements, they can be used to mount cameras, scopes, testing equipment, antennas, lights, signs, and much more.
• Easy to Use: Just pump the plunger a few times, the plate will get sufficient vacuum for lifting. Red-Line indicator warns user of any vacuum loss. Release Valve Lever Permits Quick and Complete Release.