Stanley FatMax® 30 metre chalk line and chalk set. The chalk line is enclosed in a durable die-cast aluminium housing, with a patented chalk view window to see exactly how much chalk is left. A release button allows line extension without handle rotation and the line can be quickly rewound due to the 5:1 gear ratio. Supplied with a 113g. refill of black chalk. Chalk line length: 30m (100 ft).