a. Hole size or thread information.
b. Parts material
c. Spindle RPM
d. Horsepower
e. Spindle nose type
f. How will the units be used, in vertical, horizontal or tilt.
g. Parts drawing or print.
2. Multiple Spindle Head
a. Work piece drawing and holes layout.
b. Hole or tap size.
c. Number of spindle.
d. Distance between spindles.
e. Work piece material.
f. For drilling or tapping ?
g. Where do you want to mount this head to ?
h. What is spindle type, JT, MT or specify.