12 Pcs M8x60mm Expansion Rawl Screw Bolts, Hex Nut Expansion Sleeve Anchor Bolt Heavy Duty Fixing Anchors, Heavy Duty Concrete Masonry Brick Wall Fixings. Easy to Install Drill a hole on the wall, knock the expansion screw into the hole, use a wrench to tighten the nut of the expansion bolt outside the wall hole.
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