The ink is alcohol based and permanent

A alcohol-based fast drying pitch black ink and extremely hard to buff

so you can lay down thick

The kit also includes 12 Refill Extensions for easy and clean refilling

The pen is refillable and it has a 15 mm tip that can be changed as well

scrikss graph x clutch pencil 2 0 mm black Ink and paint refills The ink is alcohol basedThe Scrikss Graph X Clutch Pencil 2. 0 mm is made for precision and comfort, combining a durable nickel plated metal body with a brass grip and a hexagonal, ergonomic design. Its structure keeps the pencil stable in your hand, making it easy to control for technical drawings or artistic work. It features a spring loaded, retractable tip mechanism for smooth writing and drawing, a push button mechanism for advancing the lead, a metal clip, and an