This is a wonderful tool for smaller hollowing operations.  It is primarily a tool for end-grain hollowing with such projects as lidded boxes, goblets, smaller end-grain bowls and vessels.   It has a limiter over the cutter to regulate the amount of cutting action--helpful in hollow turning.  It is used in a most unusual way:  you rub the limiter  as the bevel to support the cutter.

It also has a swing-tip feature to help in hollowing operations where the opening is smaller than the sides of your piece.