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Explain how calcium is needed for muscle contraction.
Hacksaw Blade
A thin, toothed blade used in a hacksaw for cutting metal, plastic, or other materials through a back-and-forth motion.
Hammer Handle
The handle or grip part of a hammer, designed for the user to hold and swing the tool.
Wrap
To cover or enclose something completely with a material, such as paper, fabric, or plastic, for protection or decoration.
Line Wrench
A specialized wrench designed for gripping and turning pipes or fittings without slipping.
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