Array
(
    [0] => Array
        (
            [p_number] => 21P05
            [pa_tube-size-mm] => 5
            [product_id] => 3747
        )

    [1] => Array
        (
            [p_number] => 21P06
            [pa_tube-size-mm] => 6
            [product_id] => 3750
        )

    [2] => Array
        (
            [p_number] => 21P08
            [pa_tube-size-mm] => 8
            [product_id] => 3753
        )

    [3] => Array
        (
            [p_number] => 21P10
            [pa_tube-size-mm] => 10
            [product_id] => 3756
        )

    [4] => Array
        (
            [p_number] => 21P12
            [pa_tube-size-mm] => 12
            [product_id] => 3759
        )

    [5] => Array
        (
            [p_number] => 21P14
            [pa_tube-size-mm] => 14
            [product_id] => 3762
        )

    [6] => Array
        (
            [p_number] => 21P04
            [pa_tube-size-mm] => 4
            [product_id] => 3744
        )

)
Part Number Tube Size
21P04 4
21P05 5
21P06 6
21P08 8
21P10 10
21P12 12
21P14 14