Prevents Over-Tightening Pins lock the saw to prevent over-tightening and prevent threads from stripping. Pins lock the saw to prevent over-tightening.
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Smooth Working Works smoothly every time without worry of rusting or corrosion slowing or sticking the operation. Fast and easy to engage and disengage hole saw.
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Easy Centring Tool-free, fast and easy to engage and disengage. Set a recessed screw for quick and easy centring bit changes.
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