Staedtler Stick430 F (0.25 mm) Ballpoint Pen Medium Various Colors Box of 10 (Black)

The box marks it as 0.25 mm, but it is much thicker than my other 0.25 mm pens.I've taken a comparison photo. The one on the left is the Staedtler Stick 430F. The one on the right is a Pilot G-Tec-C. Both are labeled as 0.25 mm, but there is a clear size discrepancy.