Introducing the 50-Foot Auto Retracting Blue Chalk Line, an industry-changer for professionals seeking speed and efficiency on the job. Klein Tools replaceable capsules ensure quick and clean refilling every time. The auto-retracting reel effortlessly rewinds 50 feet of strong braided nylon line with the push of button, making it faster retracting than 6:1 gear ratios. Built with durability in mind, the high-impact ABS case with soft grips ensures long-term comfort and resilience.