The bit has a 6.35mm outer diameter to make it compatible with a wide variety of CNC machine spindles, because it mounts to the spindle with a 6.35mm collet. The spindle can be switched on or off during operation.
The holder is also equipped with a magnet on the inside to hold the bit in place while still being able to swop the diamond tip.
This diamond engraving bit is available in 2 angles, 90° and 120° angles. The 90° works better on very hard smooth surfaces like glass and metal. The 120° works better on softer uneven materials like stone and tiles.
Stainless steel bit with a 0.2mm diamond engraving tip.