7-Machine-Kinds-Mechanical-Household-Zipper
zipper
Slide fasteners {zipper}| [1890 to 1913] can have sliders that guide hooks into each other, at bottom. Slider top goes over zipper ribs, on hook outer edges, to line up hooks on inside.
Velcro zipper
Velcro uses two tapes {Velcro zipper}|. One tape has many small plastic hooks. The other tape has loops.
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Date Modified: 2022.0225