Practical set of chalk liner – markers and powder 180 g (blue). The chalk liner is made of high quality ABS plastic – resistant to cracking when falling, has a transmission system that allows 3x faster winding, the string is two-component – it consists of cotton string for good color absorption and nylon string, which increases resistance to tearing, quick and easy color replenishment , the shape of the body of the chalk liner allows use as a plumb line.