Also known as Allen key, Allen wrench, Hex wrench, Unbrako, Inbus
tool for screws with an internal hex head.
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Hex keys of various sizes
A hex key (also hex wrench, Allen key, Allen wrench) is a simple driver for bolts or screws that have heads with internal hexagonal recesses (sockets).
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Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).