Heavy-duty and robust vacuum cups with high load capacity, especially for heavy and big work pieces with smooth surfaces. Vacuum control and safe work thanks to a warning marking. Get a metal handled vacuum cup designed for lifting large panels with a smooth surface. Great for Granite, Marble, Quartz, Ceramic, Porcelain, Glass. This vacuum cup measures 8" or 10" in diameter and is for use on install sites and for moving panels of material that have a smooth surface. It is great for heavy & large work pieces. The 10" vacuum suction lifter is capable of handling a load capacity of 331 lbs. It only weighs 3 lbs. The suction cup stone lifter comes with a handy carrying case for storage and transport.