370/380 Series (NGR)

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

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