This handy Bohin Mechanical Chalk Cartridge Pencil Set makes precise line markings on a wide range of surfaces. Extra chalk is contained in a handy plastic storage box to prevent breakage. Chalk sticks are easily changed due to the patented hold mechanism. The natural chalk has no wax and washes out without a trace, even after ironing.
The Bohin mechanical chalk cartridge pen refills come in packs of 16 Assorted (8 white, 4 blue and 4 pink) or White (16 white) colour chalk stick packs.