16 Pcs Expansion Rawl Screw Bolts, Hex Nut Expansion Sleeve, Anchor Bolts Heavy Duty Fixing, Concrete Masonry Brick Wall Fixings (M6/M8/M10). 【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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