Large and strong clamp can clip anywhere you want (0-2.4inch) and can attach to bleachers, benches, tailgates, boats, poles, boats, fences and more. 1.5\" diameter tube with thumbscrew to securely hold the umbrella and allows you to adjust the heightQuick and easy set-up, use for umbrellas, flags and fishing poles. You can adjust the hole diameter by tightening the screw. The maximum clampable thickness is 2.4 inch.If you are looking for replacement of heavy & huge umbrella holder, this
Specification:
Material: Stainless SteelUmbrella installation opening diameter: 3.8cm1.5inch Size(LxWxH): 3.94 x 3.94 x 6.1 inch