Does the customer need both upward and downward for each of the t levels? In other words, are they thinking about four cases of (1) M5xt0.8 upward, (2) M5xt0.8 downward, (3) M5xt1.2 upward and (4)M5xt1.2 downward? If so, please note they will need four sets of burring tools.
Plus, what is the material of the workpiece?
I am looking forward to hearing from you.