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Usage Chart
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What do the numbers mean?
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HELPFUL HINT:
The series number is the first 2 digits of each bur number.
For example, if you are looking for a series 21 all material grain, look for a bur number that begins with 21.
Or if you are looking for a series 28 very coarse grain, look for a bur number that begins with 28.
For example, if you are looking for a series 21 all material grain, look for a bur number that begins with 21.
Or if you are looking for a series 28 very coarse grain, look for a bur number that begins with 28.