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SW Ohio | Each end has a second end inside it that is reversible and one end is a different size for the nut drivers. You can change two points without pulling the main shaft. Then if you reverse the main shaft you can reverse the end for two more points. That makes four. Now!! Each point is reversible. that makes eight. Hope you can "see" what I mean. A picture would be worth a thousand words.
Hope this helps,
Dave | |
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ScrewDriver Machinery
