Caster: 1)Wheel: PA / PP 2)Fork: steel yoke 3)Loading capacity: 50 to 205kg 4)Wheel diameter: 80 to 200mm caster:Wheel: PA ... : bolt hole,top plate,threaded stem and grip stemFeatures:1.caster: rigid caster, swivel caster2.PA: excellent anti-abrasion, resist compression,impact ... appliance, shelf appliance,factory workshop,etc. 2010 new heavy-duty caster