CBN EXPERT PRO bars with a grain size of 300 GRIT | 60/40 µm on sharpening blanks are a high-quality tool designed specifically for for effective sharpening of cutting edges with especially hard metals.

Expert PRO in the name indicates that it is a monolayer base on a polyamide (organic) bond with a thickness of 3 mm. The bar has dimensions of 150*25*3 mm, glued to an aluminum blank 160*25*4 mm with laser engraving where the grain size is indicated in various designation systems.

Expert PRO CBN - experts advise choosing CBN for its outstanding qualities in sharpening hard steels, in particular with a high carbon content and stainless steels. The CBN itself (cubic boron nitride) is a very hard material, compared to diamond and is widely used for sharpening various types of tools. Diamond and CBN will produce an equally perfect edge when sharpening, but CBN will do it faster.

Purpose of diamond and CBN bars: restoring and reshaping the cutting edge of knives; fine sharpening, dressing, polishing.

Features of this bar model:
- fast metal grinding (allows you to complete the work in a few movements).
- increases the accuracy of tool processing.
- high concentration of diamond powder for high cutting ability and productivity.
- not brittle, does not crack when dropped or hit.
- retains its dimensions throughout its service life.
- immediately ready for work and does not require leveling.

The uniqueness of diamond and CBN bars is that they practically do not dull, but become unusable from clogging, clogging of the abrasive with alloyed and viscous steels, so we recommend using them with suspensions, oils and washing with soap and water.