Open Box Deep Discount This listing is for one brand new, unused Tri-Angle. The item has damaged packaging or an opened box, so we are selling it at a deep discount. Quantity is limited to what is shown, and the item ships in its current packaging. Greater abrasion and thermal conductivity than conventional abrasives like silicon carbide and aluminum oxide Combines the advantages of this fast cutting abrasive with the convenience and ease of use Superabrasive that is second in hardness only to diamond Cubic Boron Nitride (CBN) is a superabrasive that is second in hardness only to diamond. It offers greater abrasion resistance and thermal conductivity than conventional abrasives like silicon carbide and aluminum oxide, making it the preferred abrasive in many advanced industrial grinding applications. Now you can combine the advantages of this fast-cutting abrasive with the convenience and ease of use of Spyderco&';s Tri-Angle Sharpmaker with these CBN-coated Sharpmaker rods. table.productattributes, .productattributes td { border-bottom: 1px solid #ddd; border-collapse: collapse; padding: 2px; text-align: left; }