55 degree
57.5 degree
60 degree
45 degree
110 degree
100 degree
90 degree
118 degree
For general purpose use point angle of twist drill is 118 Degree.
It is more heat resistant
has higher tool life
can be used at higher cutting speed
all the above
Set square
Slip gauge
bevel protractor
Caliper
Machine hard materials
Machine soft materials
Complete the machining faster
None