Warning chain is made of plastic, different color and different size, for warning and caution purposePacking: In roll or bag, 50/25metersModel No.DiaLoop SizeWeightColor and LengthS-16013mm12x10mmcAlarm & Security Systems an bRadio e done according to your requirementS-16024mm25x18mm39g/mS-16036mm27x20mm60g/mS-16046mm41x21mm65g/mS-16056mm24x22mmWoodworking Machinery 70g/mS-16068mm54x27mm103g/mS-16078mm50x26mm126g/mS-16088mm38x26mmS-160912mm66x42mm299g/mConnector: S shape 6mm/8mmConnectorMould : Q shape 6mm/8mm