


Boride Narrow 900-FThis stone has super fine structure and excellent breakdown properties for final finishing prior to mirror (diamond polished) finishing. The 900 F works especially well on P 20 mold steel with a hardness ranging from 29 to 32Rc. The 900 F is primarily used for hand finishing operations. Always use a lubricant with the stone. The soft bond of the Boride 900 F bar allows it to cope well with fairly hard steels of 58 62 units. Therefore, this stone can
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Your Boride Narrow 900-F orders ship within 1-2 business days.
Delivery Options:
- Standard: 3-7 business days
- Fast: 2-3 business days
- Express: 1-2 business days
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
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★★★★★ 5
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Size: 4 Awg - 3/8" (M10) Ring, Number of Items: 10
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Reviewed in the United States on April 25, 2026
★★★★★ 4
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Size: 8 Awg - 1/4" (M6) Ring, Number of Items: 10
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Reviewed in the United States on May 1, 2026
★★★★★ 5
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Size: 8,6,4,2,1,1/0,2/0, Number of Items: 264, Size: 8,6,4,2,1,1/0,2/0, Number of Items: 264
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Reviewed in the United States on May 26, 2026
★★★★★ 5
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Size: 1/0 Awg - 3/8" (M10) Ring, Number of Items: 10
Well made!
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Reviewed in the United States on May 22, 2026
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