Last I checked (and drooled a bit) Gerstner makes em' in Walnut, Red Oak, and Cherry Wood.
They have a "second line" that they sell through , and to other suppliers.
I think Grizzly carries that line, amongst others.
GTC
Member, Clan of the Border Rats -- “Sometimes I wonder whether the world is being run by smart people who are putting us on or by imbeciles who really mean it.”- Mark Twain