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- Sunken opening
It almost fits itself! |
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- Slot together blind
The sunken inner square drive, the
slightly convex outer square drive and the four locking grooves make
assembly kid's stuff. |
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- Two-piece power transmission
STAHLWILLE internal hex. bits
are made of two parts: a perfectly hardened body for transmitting the
drive forces and the tough, specially hardened end piece designed
specifically to match the requirements of internal hex.
screws. |
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- Firm fit
The collar on the extensions means they fit so
accurately together that there's no wobble or play.
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