Stanley 0-47-681 FatMax Chalk Line Set 30M The Stanley 0-47-681 chalk line has 2x the tensile strength of traditional lines and lasts twice as long. Its water-resistant, high-impact ABS case with rubber grips is durable and easy to hold. This kit includes a chalk reel and 4 oz bottle of blue Stanley marking chalk. It rewinds 3 times faster due to the 3:1 gear ratio and is high capacity holding up to 3 oz of chalk. The patented stainless-steel interlocking hook is ideal for joining linesand patented chalk view sliding door allows for quick refills. Features: 3.5 to 1 gear ratio rewinds 3 x faster Can be used vertically as a plumb bob - Weight and style combination provides Plumb Bob utility High impact ABS case for durability Large 45g chalk capacity to reduce refilling times Metal crank folds into the case for ease of storage Patented chalk view window to see exactly how much chalk you have left Rubber over the moulded case for strength and better grip Sliding door for quick and easy r