Klein Tools' 100-Foot Quick-Fill Chalk Line features jam-resistant gears, ensuring seamless retraction of the 100-Foot braided nylon thread. The 4 times faster 4:1 gear ratio surpasses traditional alternatives. Enjoy dual functionality as a chalk line and plumb bob for precise horizontal and vertical layouts. Transparent, refillable chalk capsules offer easy visibility and optimal refilling with Cat. Nos. CHLK14B, CHLK14R. The high-impact ABS case with soft grips guarantees lasting durability.