Fabricated threading tap for seating the brass range of threaded inserts which have a unique external sharp-finned thread suited to wood.
Note this is an assembly Loc-Tited together and not intended to be dismantled.
These have a plain guide nose the same diameter as the root diameter of the respective insert which greatly assists with getting the insert seated properly.
Hint - if possible use a drill press to drill the hole for the insert
Nose and drill diameters