Back by popular demand! This is a burr that we carried many years ago, before it was discontinued. Now it is back. It is a premium diamond disc, great for reaching into tight areas and sanding flat surfaces. Highest quality diamond burrs available today. 1.6mm diameter. Exactly the same burr as our 825-023, just smaller in diameter. This bur has the look of a straight-pin. It works very well on wood for smoothing backgrounds, undercutting and detailing hair on animal engravings.