The adjustment sleeve is used to get the right milling depth when changing the milling bit. This sleeve is best fitted for the longer bits.
To use it, insert the head of the bit in the sleeve, and insert the body of the bit in the spindle. This adjustment sleeve accurately fixes the height of the milling bit, when changing from a bit to another.
Engraving bits for acrylics, other synthetic materials and wood. 40 degree. Produces a bottom groove diameter of 0,4mm.