... No: 626ZZ rollerBearing Size: 6*19*6mm Bearing material: carbon steelRoller material: nylonProduct Feature:1.Low coefficient of product,reduce tire ... .Bearing the adoption of advanced technology production Material Option:1.Bearing Material:carbon steel,chrome,stainless steel,iron,copper, ... roller is suitable for shower room,wardrobes,big cabins,sliding doors and windows,etc.Our Product:1.OEM and ...