Product Description Tajima, the name in contractor quality chalk boxes, has developed this new Plumb-Rite Bob Setter with a 14-Ounce quick stabilizing bob and a steel reinforced pin striker for better durability. From the Manufacturer Tajima, the name in contractor quality chalk boxes, has developed this new Plumb-Rite Bob Setter with a 14-Ounce quick stabilizing bob and a steel reinforced pin striker for better durability. QUICK STABILIZATION Quickstabilizing 14Ounce bob steadies within 6 seconds MULTISURFACE CONNECTION Includes setting pin for wooddrywall, strong magnet for steel surfaces, and hook for nails or studs SELFRETRACTING LINE Universal plumb bob setter with 14.5 ft selfretracting line for quick easy storage NONSLIP GRIP Elastomerwrapped setter for added drop protection and secure grip SUPERIOR JAPANESE CONSTRUCTION Built with durability and quality in mind, Tajimas chamfer tools offer both thoughtful form and functionality that drywallers will surely appreciate.