The H85AX hones a complete line of cylinders - automatically! Hone a complete V block unattended with optional auto-rotate V fixture. Automatic lower crash protection safeguards stones and holders from unexpected - and expensive - damage, keeping jobs on time and on budget. The automatic load control gives perfectly round and straight cylinders, and automatic CNC control finishes very cylinder to the same size. Because the H85X accepts both diamond and CBN abrasives, shops get the perfect surface finish no matter the block construction.