3-cups aluminium glass suction cups 1.Vacuum grabber--alloy body. 2.Max-lift:150kg. 3.lifting life:8000times. 3-cups aluminium glass suction cupsUsage:can move or lift non-porous materials ,such as glass, metal, Formica, plastics, fiberglass, linoleum and polished stone are good examples. Alumionium alloy series.Main body is made of alloy ,it's plated with nickel after polished .It is durable and ...