Usage Tips:Sturdy furniture casters, high hardness, no damage, can rotate 360 degrees, quiet and wear-resistant, smooth rolling, strong carrying capacity, stable and firm, safe to use! Retro style, traditional craftsmanship, the pursuit of simplicity, smooth lines, more beautiful and practical.It has a wide range of uses and can be used for piano legs, sofas, Chinese style furniture, European style furniture, retro furniture, etc.specification:-Name: brass casters-Material: brass and galvanized screw iron and rubber-Wheel diameter: 2.5cm-Screw diameter: 6mm-Screw length: 3 cm-Screw down: 6mm-Total load: 150 kgPackage content: 4 casters◆ Note:-Due to manual measurement, please allow a little error of 1 to 2mm.-Monitor calibration is inconsistent and item color shown in photo may be showing slightly different from the actual item.