Specifications: Brand: Ulanzi Model: CA03 Material: Aluminum Alloy, Magnet, Stainless Steel Load Capacity: 5kg/11.02lb Inner Ring Diameter: 95mm/3.74inch Dimensions:133.5mm×85.0mm*120.0mm/5.26inch*3.35inch*4.72inch Net Weight: 207g/0.46lb Model: CA05 Material: Aluminum Alloy, Magnet, Stainless Steel Load Capacity: 5kg/11.021b Inner Ring Diameter: 75mm/2.95inch Dimensions:112.7mm 66.5mm*83.6mm/4.44inch*2.62inch*3.29inch Net Weight: 134g/0.3lb What's in the box: 1x 75mm Adapter Ring or 1x 95mm Adapter Ring 1x Built-in Hex Wrench