IRWIN Tools STRAIT-LINE Large-Capacity Chalk Reel (2031311) This big reel is the ideal choice for large-scale, industrial jobs. 150 feet of strong nylon and polyester line mark long distances with minimal effort. The 2:1 gear ratio lets you retract the line twice as fast as traditional chalk line reels. A durable steel crank locks securely to prevent line tangles. Sliding door lets you refill chalk quickly and easily.