The flow of ink is controlled by squeezing the soft body of the marker

but simpler

The marker has a 20 mm wide fiber tip made especially for calligraphy

The pencils are supplied unsharpened

the ONE4ALL 627HS is bigger

molotow aqua color brush pen Ink and paint refills The flow of ink isBrush pens from Molotow filled with water based ink that is perfect for illustrations, sketches, hand lettering and more. The colors can be mixed with each other or with water to get a watercolor effect. The ink is also odorless and non toxic so it is also suitable for children. The markers are refillable and made in Germany. See all markers and products from Molotow here.