Use the cup on clean, relatively smooth, nonporous surfaces, at temperatures from 10 to 120 Fahrenheit . Moisture or contaminants can reduce the slip resistance of the cup. The red-line indicator may not perform reliably at elevations above 5000 feet.
-Load capacity: 125 lbs. per cup;Comes with a carrying case.
-Fast attachment on smooth, nonporous flat surfaces;
-Red-line indicator warns user of any vacuum loss;
-Release valve lever permits quick and complete release;
-Check valve allows repumping without loss of remaining vacuum.