Diamond tip spring loaded  drag engraving bit tool 1/4" shank
 
This 1/4" shank  engraving bit tool  makes fine line engraving easy on your CNC mill or router. Its spring loaded design makes it easy to engrave on uneven  surfaces as the tip is under spring tension and adjusts as it moves over the surface.The tip is  retractable and tension is adjustable for different materials or engrave depth.
 
The uses for this drag enrgaver and many and they are so easy to use since the z height can be uneven on the material surface since the tip of the spring loaded dreag enrgaver compensates for the uneven surface. No need to try and program the Z height changes in uneven laterials! Our RDZ (retractable depth Z) technology tools with anti chatter design are the easy solution for your cnc router or mill engraving needs.
 
These tools work great with most all cnc software including Bobcad, Vectric, Vcarve, CamBam, Mastercam, solidworks, fusion 360, Meshcam, camworks, Deskproto, Autodesk and more.
 
  This tool is great for engraving materials like trophy plates,fiber board, Brass, aluminum  and any other similar surface.Works on mild steel as well. This tool works by dragging over the surface, it does not rotate so your spindle will need to be turned off. Comes, instructions and re-usable storage tube. Line width +- .005" 
 
 
1/4" shank
Overall length approx   47 mm
Tip retract approx  8mm
Recommend 90 deg tip for most applications
60 deg tip has the most penetration great for smooth metal
120 deg tip has less penetration great for softer materials