Flat file but uniform in width

Hand file but narrow in width

Flat file but thinner in thickness

Flat file but thinner and uniform in thickness

MT-1 taper

MT-2 taper

MT-3 taper

MT-4 taper

Aluminium oxide wheel is used

Silicon carbide wheel is used

Diamond wheel is used

Corundum wheel is used

Thin section metal

Soft metals

broad section metals

Non-metals

to thread the hole with full threads up to the bottom

to start the threads

after the first (rougher) tap

to form the threads easily