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Concrete screw - Galv M12 x 150mm. Used to fasten wheel stops to concrete surfaces
Drill 12mm dia hole into concrete, hole must be 25mm deeper than fixing penetration. Clear out dust. Tighten screw with socket or impact driver.
* If resistance is experienced when tightening, unscrew the fastener one turn then re-tighten. Ensure you do not over tighten.