MTA type is installed in the form of flat tail Morse taper shank, such as: drill, machine reamer is flat tail Morse taper shank.
Cooperate with taper shank drill, milling cutter, reamer and other mohs taper shank with flat tail cutting tools to improve work efficiency.

Flat tail stuck into taper hole, fixed position does not slide
Center through, can center water, increase internal cooling, improve tool durability. The flat hole of the cone part is processed by line cutting, forming once to ensure that the tool will not interfere with the flat hole and improve the machining accuracy.

The middle through hole, is conducive to water, increase earthquake resistance.