Side 20/14, 7/5, 3/2, and 1/0 are made on the new upgraded OSB bundle. The difference between the OSB bundle and the others is that it does not use boron carbide. In addition, the abrasive layer on it does not sinter but sticks to the body of the metal plate. The absence of extra impregnations of other abrasives makes it possible to do softer and finer work. Already out of the box, such a bar is ready for use; it does not require alignment on silicon carbide. The OSB bond is ideal for hard steels at small angles.

The bar is suitable for pre-finishing sharpening and fine-tuning.

Stone size: 200x83,4x12 mm. (LxWxH)
Diamond layer thickness: 1 mm.
Diamond powder concentration: 100%

Grittiness: 20/14-7/5 (F400-F800), 3/2-1/0 (F1200-F2500)

Diamond Powder Concentration: 100%

Recommendations for work:
Works with soapy water as well as with oil. The manufacturer recommends working with water or soapy water, but working with oil gives an excellent result without leaving a large amount of aqueous suspension.