The 3/8 and 1/2 inch Detail Gouge has a flute depth of 33% of the diameter with a nice radius to cut beads or coves. This tool does everything well.
The 7/16 Detail Gouge was designed by turner, writer and teacher King Heiple, the flute is slightly shallower with a larger radius. This is also know as the Heiple detail gouge.
NOTE – The 7/16 detail will be available for students of Ernie Conover, sorry I’m running low and they were made for his teaching.