- Hirschfield #20 Combines a sharp hatchet-shaped blade that is 3.5 mm wide with a straight flat blade with a rounded tip that is 4 mm wide. - DuraLite ColorRings Handle features a large 9.5cm/3/8” diameter, is extremely lightweight for maximum tactile sensitivity, designed to permit you to easily identify, organize and customize your instrumentation. **For further product information, please contact Chat Support**