Great for star tips like the 1M that can loose their shape over time.
To straighten tops (coupler end) of standard tips: slide tip into narrow end of barrel-shaped section. Fit knob end of cone shaped section into tip and twist back and forth, using light pressure, until top of tip is straightened. Loosen with your finger or a pencil to remove.
For large tips: place tip into wide end of barrel-shaped section, and follow instructions above
To straighten openings of tips 1 to 12 or to open star tips, push pointed end of cone shaped section into bottom of tip and through opening. Turn gently back and forth until tip regains original shape.