Suction Cup Mount Product Type Suction Cup Mount Cup Type Concave Mount Type Threaded Stud Maximum Load Capacity 40 lb Cup Diameter 4 1/2 in Cup Material Rubber Release Mechanism Pull Tab Handle Type Not Applicable Mounting Thread Size 1/4 In.-20 Compatible Surface Type Curved Surfaces Flat Surfaces Minimum Operating Temperature 0 Degrees F Maximum Operating Temperature 120 Degrees F Includes Vacuum Pad Protector Number of Cups 1 Handle Length Not Applicable