The M-D 100 ft. Contactor Chalk Reel is used to establish clean bold reference lines during construction and home improvement projects. This chalk line includes a 0.06 in.x 100 ft. braided poly/cotton line that will hold up to wear & tear on the job site. This high quality line holds more chalk to eliminate chalk scatter when snapping a line and create high-visibility markings. The ABS chalk box holds 3.5 oz. of chalk which is sold separately. Different chalk colors are available for a wide range of surfaces and projects. The manual crank easily rewinds the line and locks into 4 different positions allowing a taut line to be pulled at multiple distances. Chalk is easily filled through a wide mouth with a removable cap. M-D Replacement Chalk Line, item 00687 is sold sold separatley.