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Wire Scratch Brush has flat wire bristles that are grouped in 5x10 rows. Sturdy wood block handle is 7-3/4in long x 2-5/8in wide. The TSA-176, with 2in bristles, may be used on soil-cement specimens to meet ASTM D 559, D 560, AASHTO T 135, and T 136. The TSA-176A is the same brush with 1-1/4in bristles.
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