Furniture Wheel Castor Caster Material: iron & nylon Color: black,white, grey, brown Furniture Wheel Castor CasterMaterial: iron & nylonColor: black,white, grey, brown 1) Material: iron and nylon2) Diameter: 38mm, 52mm3) With plate/ screw/ panel holder/ sawtooth ring4) With brake/ without brake5) Panel size is 38*38mm, and can be customized.6) Hole distance: 33mm, and can be customized.