... )Excellent turning and moving 3)Dia.:30mm,40mm,50mm 40mm plastic furniture caster1)Loading capacity: above 30kgs/pc,2)Excellent turning ... )Dia.:30mm,40mm,50mm4)Material:nylon+steel5)Color:black6)Steel plate size:38*38*1.5mm7)Packing:4pcs/polybag,240pcs/carton ... will reply in the earliest time. moset widely used 40mm plastic furniture caster with flat plate