Butterfly

The size refers to the width.
The dimensions are below:
W: 12 mm / 0.5 in - H: 8 mm / 0.3 in
W: 15 mm / 0.6 in - H: 10 mm / 0.4 in
W: 20 mm / 0.8 in - H: 13 mm / 0.5 in
W: 25 mm / 1 in - H: 16.5 mm / 0.6 in
W: 32 mm / 1.25 in - H: 21 mm / 0.8 in