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390 Series (NGB)

R1.00

Housing: Pressed steel, double ballrace swivel
Zinc plated,Dust-proof seal
Wheel: Elastic rubber on nylon hub,roller bearing (NGR)
Double precison ball bearing (NGB)
Non-marking, Durable,Excellent floor protection
Good shock absorbant,quiet operation
Temperature Range -5 ° C  70 ° C
Hardness: 70 ± 3 shore A