COH -

The Kemper COH Cutout Tool has a sharp triangular steel blade that can handle cleaning or cutting openings in thick-walled greenware or leather-hard clay.

The COH has a heavier, sharp triangular stainless steel blade that is designed for heavy, thick wall greenware and pottery.  Blade is double-edged to permit reverse cuts and sharp turns.  Smooth wooden handles provide a firm grip and steady control of the tools.