Doghouse-Shaped Carbide
SNOWSports Dealer News
'Klawing Their Way to the Top'
Sept 1976, Page 23

Kalamazoo 3/7 racing Carbides and trail Konsumer Karbides are made from the same special formulation steel bar.   The basic bar, called a host bar, is extruded with a deep groove opposite the flat back.

It's obvious that there is no significant difference between what is advertised
(61 degrees) and Woody's 60 degrees.