Two 5" (127 mm) rubber gripping pads make this Double Vacuum Cup Lifter the most practical way to put a handle on glass, marble, granite or any smooth-surface material. It has many uses including for setting mirrors, removing salvage, or handling structural glass. Very sturdy and portable, it weighs only 3-1/2 lbs. (1.6 kg), and features the industry-proven design that has been a favorite of the glass industry for decades. The cast frame has a smooth yet durable finish that resists corrosion and the abuse that comes from everyday use. The 550 is a practical and affordable material handling system that will give you years of good service. Quality made by CRL in the U.S.A.