The 30m line passes through a reservoir of coloured chalk as it is fed out, coating the line in chalk dust. When this line is presses against a wall, it leaves a straight temporary line to work to.
The die-cast magnesium body contains a 30M line reel, which passes through a reservoir of coloured chalk (sold separately). It becomes coated as it is reeled out. Snapping the taut line against a surface deposits the colour chalk leaving a visible but temporary line to work to.
A useful feature of this reel is the push button instant release which allows the line to be pulled out rapidly whilst bypassing the winding mechanism.
The hook has a bent tip and can be stored on the reels side, which along with the fold away handle allows for neat and easy storage. This chalk line also features a stainless steel belt clip.