1 piece industrial vacuum cups: High performance round vacuum cup, diameter 20.6cm (8"). High performance vacuum cup, easy to use the air pump press. The suction cup only works on smooth and non-porous Surfaces, efficient, economical and practical Vacuum suction cup: thickened handle made of engineering ABS material, ergonomic design, non-slip, long service life High quality rubber pad, 206 suction cup mm wide, thick and durable The bottom of the suction cup structure is professionally designed and can absorb a variety of surfaces, such as: B. curved windshield glass, etc. Load capacity: The strong suction cup can hold 100 kg of each suction cup vertically, if the goods transported are heavy, the number of suction cups can be set up appropriately to evenly distribute the load capacity, especially for glass, metal ceramic tiles, wood floors, stone, drywall, furniture, metal, plastic and others, Objects with smooth surface characteristics To note!! The suction cup only acts on the surface of a smooth, poreless and airtight object. The surface of the object to be adsorbed should be larger than the size of the suction cup. Before use, make sure the surface of the adsorbed object is clean, free of water and oil Easy and safe: press the air pump to inhale and suck, press several times until the red line disappears, then let it sit for 20 seconds and slowly lift the object. Convenient ventilation, easy operation, press and hold the ventilation valve, the red line will come out to remove the adsorbed object Put the suction cup on a smooth surface without water or oil, and press the air pump firmly suction to suck the air. Quickly and vigorously press the pumping valve so that the suction cups quickly build vacuum pressure to attach to the object. Until the red safety line of the air pump disappears completely, it is safe to work. (Note: The air pump cannot be pressed slowly) When the work is finished, grasp the edge of the suction cup and pull out the suction cup directly. The thoughtful design of the safety red line can help us always pay attention to the air leakage in the suction cup, which makes our work safer. The convenient design allows us to quickly remove the suction cup after the work is finished. Thickened handle made of ABS engineering material, ergonomic design, non-slip, long service life.