DEWALT DWHT47143 Chalk Reel and Kit, Blue
DEWALT Chalk reels have an open-access door for quick refills and access to internal components.  The have a 100' heavy-duty line that is designed to resists abrasion and breakage.  The also have a stainless hook and crank that can withstand abuse and resist corrosion.  Their high-impact ABS housing is light-weight and durable, and has an over-molded soft grip comfort and control.