This high speed steel 8-piece boring bar set includes three different length boring bars each for minimum bores of 5/16" and 3/8", and two boring bars for minimum bores of 7/16". The bore depth ranges from 3/4" to 1-11/16".

The boring bars are made from M35 5% cobalt high speed steel.

The shanks are held to 0.000 to -0.0005" from the nominal diameter.

The stand may vary from that shown in the photo.