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A set of step drill and handle which is convenient for processing parts of plastic assembly model and round hole in plate material.
Step drill specification:
· Drillable size: 9 types (diameter 2/3/4/5/6/7/8/9/10 mm)
· Each diameter size is displayed on the drill surface
· Titanium coated
· Processable material: Plastic material, light metal such as aluminum and brass
