3in Adjusting Boring Head R8 Shank 3/4 Cemented Carbide Boring Bar Kit For CNC

  

R8 Shank can be mounted on a 2in, 3in or 4in boring head with a 1.5in-18 thread size. Wide Range of Application: The boring head bar kit is suitable for CNC hardening and grinding on R8 shank machines.