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Purpose: It is primarily used for loosening and tightening the needle clamp screw on the needle bar to change needles.
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Compatibility: It is designed for use with 7 Series, 8 Series, and Q Series (longarm) Bernina machines.
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Design: It is a small, typically gray-handled screwdriver designed for a precise fit to prevent over-tightening the needle clamp screw, which can cause damage.
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Function: It ensures secure installation and removal of needles.
This tool is often found in the accessory box for the aforementioned machine series.
