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Are you installing a bench, fence or metal sheet on concrete? DOJA Industrial Expansion Hook anchors provide a simple solution for strong substrates, delivering reliable fixing strength when mounting heavy fixtures on walls or floors. The Open Hook Sleeve Screw design utilises high-tensile steel, offering stable mechanical support for demanding environments, indoors and outdoors, resistant to rust and engineered for quick deployment, strong load-bearing potential, ensuring secure installation. Ideal for securing metal frameworks, mounting balustrades, lamp standards, large bins and similar fittings, the Cup Hook Expansion Bolt suits reinforced masonry and brickwork, featuring a sturdy eyelet for hanging equipment or tie-down attachments. Installation with DOJA hook bolts requires 4 steps: 1- Drill to specified diameter and depth; 2- Blow out dust using compressed air or brush; 3- Insert sleeve flush with surface, tapping if necessary; 4- Tighten to recommended torque with a torque wrench. [IMPORTANT] - 100% SATISFACTION - If you have any issues with our product, please contact us for assistance. We are here to help with any questions or concerns you may have.