Whetstone, 1/2x9-7/8x1-3/8, 220 Grit, Silicon Carbide
Global part number 39009187 is a 220-grit silicon-carbide ceramic whetstone for manual sharpening and deburring. Its oval hand-held form is intended for blades, farming equipment, knives and other cutting tools, with both wet and dry use supported.
Technical specifications
| Manufacturer / publisher | PFERD TOOLS |
|---|---|
| Category | Abrasive grains & powders |
| Updated | 2026-10-11 21:40:50 |
Sharpening role
The ceramic stone uses sharp silicon-carbide abrasive to restore cutting edges while producing a controlled surface. Regular resharpening helps preserve tool performance before an edge becomes severely damaged.
The stone is suitable for manual sharpening and deburring of conventional cutting tools.
Dimensions and grade
The documented grade is 220 grit. Dimensions are 10 inches long, 1-3/8 inches wide and 1/2 inch high.
The global part number is 39009187, the EDP number is 39020 and the packaging unit is one piece.
Materials and use modes
Documented workpiece groups include hardened or heat-treated steels above 370 HV (38 HRC), general steel, steels above 54 HRC and tool steels.
The stone can be used wet or dry. Maintain a consistent sharpening angle and move across the stone to avoid localized hollow wear.
Limits and safety
The documented exclusions are ceramic knives and serrated knives. Those edge systems require different tools and techniques.
Wear protective gloves and use caution during sharpening. Inspect the stone for cracking and keep fingers clear of the cutting edge.