I always get asked about this chalk pen which I use in my videos so I decided to get some in. This pen is really useful and nice to hold. You can change the chalk colour dependant on your project. It even comes with a handy sharpener which is small enough for the chalk cartridges.
Brand: Prym
Chalk Size: 3.8mm
Included:
16 x chalk sticks
1 x chalk holding pen
1 x sharpener