Here we have an interesting description of aNo.2 morse taper socket reamer.
Chinglish at its best. 
Description:
100% brand new and high quality.
Material: Alloy steel
Size: 1.5*12.5cm
Attention:
Clamp the workpiece to be positive.
Reaming process, his hands forced to balance.
Reamer quit, can not be reversed, because a rear corner reamer,
Reamer will reverse the chip knife tucked in between the back teeth reamer and the hole wall,
The hole wall scratch; at the same time, easy to wear reamer .
Reamer used up, to wipe clean, coated with oil, boxing avoid bumps edge.
Please allow 1-3mm error due to manual measurement. pls make sure you do not mind before you bid.