Precision Boring Heads used for enlarging the hole that has already been drilled( cast) by using single point cutting tool . Boring head , used to achieve greater accuracy of the diameter of a hole.
A small boring bar inserted into one of the holes. The head can be shifted left or right with fine gradation by a screw, adjusting the diameter of the circle that the cutting tip swings through, thus controlling the hole size.
Precision boring heads specification
Machined from High Grade Steel with tool blocks Hardened and Ground.
Moreover, Ideal for mill or Jig bore operations.
Non-Reflecting Satin Chrome Body allows easy reading and adjustment.
Threaded back for interchangeable Shanks.
Features .0005″ graduation on dial for accurate hole sizing.