Each pen has a cap with a clip so they're perfect for keeping handy around the home, office, school or even on the go. The Staedtler Stick 430 is a sturdy, medium ballpoint with a nib size of 1.0 mm. The quick Read more. Staedtler Stick 430 Pens have lightfast ink which dries immediately and is smudge proof so you can be sure your work won't smear as you write.