how to insert array of data per column in MySQL?

I have arrays stacked in 1 array and I would like to insert each array per column in MySQL.
I have reached to insert all data in arrays to 1 column, but I want to insert an array per column.
Please see the screenshot and code below.

Image of array stack

con.connect(async(err)=>{
  const x = await getStock()
  if(err){
      console.log(err);
      return err;
  }else{
      console.log("DB ok");
  }
  console.log("connected");
  x.filter(item=>item===undefined?false:true).map(item=>item.forEach(item=>{
    const sql ="INSERT INTO test (testCol1) VALUES ?";
    const values=[
      [item]
    ];
    con.query(sql,[values],(err,result)=>{
      if(err)throw err;
      console.log("this have been recorded"+result);
    });
  }));
});