The 100 ft chalk reel kit is convenient and durable. It includes a chalk reel constructed of ABS plastic for water and impact resistance, 4 oz blue chalk and a fine tip marker. This reel kit offers a convenient ChalkView™ case for the ability to see amount of chalk inside the case, as well as sliding door for quick and easy refills. With a 3:1 gear ration for 3X faster rewind, high-capacity case for holding up to 4 oz of chalk and 2X the tinsel strength for long life this tool allows for efficient marking of surfaces.