Polished clear acrylic base, better display effect. Material: The bracket is supported by brass, and the base is transparent acrylic. Our holder can perfectly display your minerals and save space. The perfect gift for loved ones and friends. Perfect for display your various balls at home or office with these mini stands. Size Chart: S Size: 50x50x75mm / 1.96x1.96x2.95inch,Base Thickness 15mm/0.59inch ,Bracket 60x45mm / 2.36x1.77inch,Diameter: 2.5mm / 0.09inch M Size: 60x60x105mm / 2.36x2.36x4.13inch,Base Thickness 15mm / 0.59inch,Bracket 90x55mm / 3.54x2.16inch,Diameter: 2.5mm / 0.19inch L Size: 80x80x115mm / 3.14x3.14x4.52inch,Base Thickness 15mm / 0.59inch,Bracket 100x75mm / 3.93x2.95inch,Diameter: 2.5mm / 0.19inch Package Includes: 1 Piece Metal Arm Mineral Fossil Stand Display Note: Please allow 1-3mm measuring deviation due to manual measurement. Due to the different monitor and light effect,the actual color of the item might be slightly different from the color showed on the pictures.Thank you!Customer satisfaction is our primary concern. If the product is somehow cracked or broken during shipping, please feel free to contact us. We will try our best to give you a satisfactory solution.