High-end diamond sharpening stone, 2 sides. 10 "x 4" x 3/8 "250mm x 100mm x 9.5mm.
Diamant, recognized hardest materials, allows an extremely fast sharpening (20 seconds instead of 10 minutes). A slight pressure on the stone produces a sharp wire in few movements.
Only use water as a lubricant. Very durable, always stays flat, does not dig.
Black - Extra rough grain 220, 60 micron
Blue - Medium grain 325, 45 micron
Red - Fine grain 600, 25 micron
Green - extra fine grain 1200, 9 micron
Black / Blue - W250CXNB
Blue / Red - W250FCNB
Red / Green - W250ENFB