1:The front and back sides.

2:Preparation materials.

3:Put your paws on the flat of the clamp.

4:Claw outwards.

5:Put the male button on the hole of the clamp.

6:Back (have notch) outwards.

7:Just put the fabric in the pliers then pressure.

8:Accomplish.

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Button Pliers

Lock Design is more better ro keep it LOCK/OPEN