Product Parameters: Product Size: 140*110mm (5.51*4.33inch) Suction Cup Diameter: 120mm (4.72inch) Net Weight: 430g (0.95lb) Material: Nitrile Butadiene Rubber + Nylon Base Safe Suction Weight: 18kg (39.68lb) Maximum Suction Weight: 3*18kg(39.68lb) (Under Normal Environmental Conditions) Product Features: 1. The Red Warning Line On The Suction Piston Indicates The Vacuum And Negative Pressure, And Indicates Whether It Is In The Safe Negative Pressure State During Operation 2. The Pull Button On The Rubber Disk Is Designed To Facilitate The Rapid Release Of Negative Pressure And Easy Operation 3. It Is Very Suitable For The Lifting, Handling And Fixing Of Glass, Ceramic Tile And Other Objects With Smooth Surface Without Holes 4. The Normal Use Environment Of The Product Is: - 18 ℃.