Screw in the Thunderbolt with a socket wrench. Apply a slight downward pressure to start the self-tapping action, as you would with a woodscrew. Thunder Bolts Hex Head Steel Self Tapping Multi Fix Concrete Anchor Screw Fixing.
Thunder Bolts Hex Head Steel Self Tapping Multi Fix Concrete Anchor Screw Fixing
Thunder bolt Concrete Fixing Screw Hex Head Steel Self Tapping Multi Fix Anchor
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Litorange 30 Pcs 5.5-6mmx19mm Hex Head Tek Self Tapping Screws with Gasket, 304 Stainless Steel Self Drilling Hex Head Screws for the hole of car, plastic, metal, wood or thin iron, boxed