Pentel Hi-Polymer Colored Lead Refills, Blue, .5 mm.

I've been using a supply of red and blue leads for years now as a freelance artist. Restocking became difficult a couple years ago and one art supply store had even declared that this product was fully discontinued. I've noticed some complaints about the .5 and .7 breaking too easily. I use exclusively the .5 and have had minor issues at best. Train for a lighter touch and these do a fantastic job. That said, I'd love to see these in .3!