You have an error in your SQL syntax

Hejsa,

Jeg kan ikke finde denne fejl (Har checket felt navnene igennem 20-30 gange) (min tabel kan ses her:http://www.fedtm.com/exp_1.jpg).
Dette er fejlen jeg får:

You have an error in your SQL syntax. Check the manual that corresponds to your MySQL server version for the right syntax to use near 'by, type, warranty, series_id, name, link, pic, category, info1

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Dette er min kode:

$sql = mysql_query("INSERT INTO products (id, by, type, hits, warranty, series_id, name, link, pic, category, info1, info2, info3, info4)
                    VALUES('', 'Admin', 'Reels', '', '$warranty', '$series_id', '$name', '$link', '$dest', '$category', '$info1', '$info2', '$info3', '$info4')") or die(mysql_error());