Roughing taper stone for the Fasttrack sharpening system.
2.5 degree taper to give intermediate angles of 22.5/27.5 degree and 27.5/32.5 degree when used with the Fasttrack sharpener or Fastrack knife sharpener.
Monycrystalline diamond with unique Diamond Cross relief pattern which gives optimal abrasion rates to maximise sharpening efficiency and reduces clogging.
Diamonds are held by Nickel plating to a steel substrate with ABS plastic base.

Specification:
Size=77 mm x 26 mm x 4/3 mm
Grade=Extra extra coarse
Grit=100 (nom. 20 micron)
Colour=Grey