Easy to install: 4 solid brass casters. Screw installation, better fixing effect, convenient and quick, can be installed in a short time. The threaded rod casters are made of pure copper, and the threaded rod is made of galvanized iron. It has high hardness, exquisite workmanship, strong and durable. Features: Precisely designed solid brass casters, quiet and wear-resistant, smooth rolling, 360 degree rotation, good stability, rubber wheel sleeves can protect the floor. 25mm. Total height : 60mm. Threaded rod diameter: 6mm. Height of threaded rod: 30mm. The casters can support 150 kg. Multi-function: suitable for piano legs, sofas, Chinese style furniture, European style furniture, retro furniture, etc. It is an ideal choice for DIY materials and furniture, adding a retro touch to your home furniture, full of classic colors and elegant flavor.