Uni Chalk markers from Uniball are a liquid chalk-based marker from Uniball. They're wonderfully useful and available in a wide range of fluorescent and bright colours. Available here with the 8mm chisel tip tip, these markers are perfect for writing on any non-porous surface like glass, metal or plastic and can be easily wiped away with a damp cloth. They're ideal for sign writing and for chalkboards when you need something a little longer lasting and bolder than chalk.
The ball which is used in the marker is designed to mix the liquid chalk and ink evenly as it is applied, giving a homogeneous finish. Uni Chalk markers are very easy to prime - just give it a vigorous shake and you're ready to go!