New boring head 4" -

New boring head 4" -

1-1/2" - 18 Threaded Hole, 1" Boring Tool Hole Size, 1-5/8" Offset. These boring heads are of extremely high quality. The hardened and ground adjusting screw ensures utmost precision and long life. Widespread .001" graduations permit even finer adjustments. Two vertical boring tool holes (one centered and one offset) as well as a cross hole result in great versatility.