its end tapered for bout three or four threads
its end tapered for about eight or ten threads
full threads for the whole of its length
none of the above
taper tap
bottoming tap
second tap
none of these
its end tapered for about three or four threads
shank, material and diameter
shank, lip angle and size of flute
material, length of body and helix angle
any one of these
straight fluted reamer
left and spiral fluted reamer
right hand spiral fluted reamer