Irwin Strait-Line 8 oz. Permanent Marking Chalk Fluorescent Orange — replacement refill (model 64905ZR) manufactured by Irwin Industrial. This 8 oz fluorescent orange chalk refill delivers high-visibility, permanent markings for layout and construction tasks. Plastic construction, broad point for clear lines, suitable for chalk lines/strips. Item weight ~9.6 ounces; product dimensions 6.6 x 7.8 x 6.5 inches. Ideal for measuring and layout tools applications where bright, durable line marking is required.
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