... : Roller bearing or Steel bushingHardness: 85(±5)ADiameter: Φ75,Φ80,Φ100,Φ125,Φ160,Φ200.Applicable Temperature: -10~60 2. ForkMaterial ... ball racewaysThickness of Fork: 2mm, 2.5mm, 3mm3. CasterType: Swivel, Fixed, Swivel with brakeMounting: Top plate, Threaded stem, Grip stem, Bolt hole ... FlexibilityExcellent Water ResistancePoor Grease Resistance Grey Rubber Wheel With Swivel Top Plate And Brake