The Kapro 214 Sure Grip Chalk Line features a bi-material durable chalk box and a retractable line level that clicks with a jam free mechanism. This allows for 6X faster rewind speed with a reliable string lock. The ergonomic handle with sure grip makes this Line Level easy to use. Its break-resistant and powder absorbent chalk line string makes quick work of any job. The Kapro 214 also includes a no-spill refill docking point for no mess or stress. With a 3 oz (85 g) capacity and a 100'(30 m) line this tool is applicable in carpentry and construction projects. The all-in-one end hook makes sure that the line stays in place, holds-on nails and ledges, and even tacks into drywall. This is the perfect chalk line for flawless, quick and accurate work. At Kapro, we reimagine precision tools and accessories for professional craftsmen to weekend warriors while setting high standards by driving innovation in our designs.