The butterfly screws anchors exhibit great elasticity. 100 x Toggle bolts. Easy Installation: when installing, you need to pre-drill a hole large enough to pass through the folded spring wings, then pass the bolt through the hole, loosen the wings and clamp them inside, and finally tighten the bolts so that they rest against the wall and hold the fasteners firmly in place; Note: leave enough space for the wings to loosen, it is best to tighten the bolts with an screwdriver.
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