These work very well. I got some 0.7mm from another company and they were complete trash. I prefer 0.5mm's anyway, and I was so happy that I could a single letter without the lead breaking on these. The leads have actually only broken on me a handful of times and I'm on my second container because I bought a second round already. I love color coding and erasability, so these are perfect for me!

Good quality

Lo compre para ver su potencial y realmente quede sorprendida, las puntillas son resistentes, un poco chicas pero rinden mucho, son faciles de borrar y no manchan las hojas; yo lo utilizo para bocetear e intercalo colores. Compren el pack de 4 piezas porque sale mucho más barato y por cada color viene entre 3 a 4 del mismo color

This is a perfect collection of color leads for mechanical pencil.

24€ for one small container is way too overpriced...

I recently went to purchase colored leads from a local art supply store and they wanted to charge me $30 for a pack.When I saw these pop up on Amazon for around $5 I figured I had nothing to lose.I assumed when they arrived they'd be broken or quite fragile due to how thin they are (Never had much luck with colored pencils not breaking), but I love my Uni paint pens, so hey these must be just as good right?These are awesome. Very durable, feel just like regular graphite leads.I noticed that they had a slightly tighter fit in my RotRing mechanical pencil, but that's always preferable to having them loose (as they can break easily).Very happy with these and will purchase again to use for my sketching and form lines.