Plastic chalk liner - ABS, body of the winder is made of ABS plastic - is resistant to cracking, string length 30m, use: marking of transitions - lines in construction, painting, SDK, ..., after filling with the included powder (blue - can be ordered: blue 37096, light blue 37094, red 37097, light red 37095, black 37098), procedure: fill the chalk liner with the enclosed powder, shake and repeatedly pull it out and rewind the string, then tighten the string in two at the required place of marking the line and lightly strum - this is how the powder caught on the string is applied in a thin layer on the marked material, then we string the string, or refill with powder, packaging: blister with euro hole. [***]