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tools - What is this kind of security bolt head called, and how can I remove it? - Home Improvement Stack Exchange
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tools - What is this kind of security bolt head called, and how can I remove it? - Home Improvement Stack Exchange
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M2-M12 High Quality Wholesale 302 Self-Tapping Screw Thread Insert with Two Cutting Slots - China Self-Tapping Insert, Self-Drilling | Made-in-China.com
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