Rotation: Each mounting rod has a ball bearing, so the wheels can rotate 360 °, the rolling is smooth, easy to install and rotate, and the furniture can be moved anywhere. Appearae: Bronze spherical appearae, specially designed for retro furniture. The vintage brass surface and elegant spherical look decorate your furniture and make your furniture look better. Material: Bronze spherical caster and metal frame, metal rotation is more durable, compact, sturdy and sturdy. Allow 1-2cm size deviation and slight color differee. Polyurethane Material: Our castor wheels will never scratch, smudge or damage your floors. Enjoy a carefree, safe glide across wood, hardwood, laminate, vinyl, tile and carpet floors all day long.. Good for all Floors: Our ball castors don't damage your expensive hardwood floor, it could not leave a track on your floor.