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9 mm Chalk holder with Pushing thread — image 1
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9 mm Chalk holder with Pushing thread

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Chalk holder with threaded rod for supporting and pushing chalk out of the holder.

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This chalk holder is designed for use with 9 mm chalk. It has teeth near the end that lightly grip the chalk to prevent it from sliding. When held in your hand, the pressure from your fingers tightens the grip so the chalk does not move.

By rotating the threaded rod, the chalk is pushed out as it is used, while the threaded rod also provides additional support to prevent the chalk from slipping back into the holder.