Marking tool Marker, Marker Medium Design: High-quality guides and robust special needle. Stepless adjustment via knurled nut across a scale of 0-15 mm, including when clamped. Ideal for small and medium lot sizes. Mounting in 20 mm collets or Weldon mount. Quick needle change by simply pulling out needle. The surface of the material structure is only compressed on the surface - the material is not weakened. Eccentric needle: Clearer marking. The higher the eccentricity and the spindle speed, the deeper the marking. External cooling recommended. Centric needle: External cooling not required. Application: For marking various materials, including aluminium, titanium, steel, bronze etc. Note: Marking needles not included.