Featuring a patented "triple thread" design that makes installation more stable. Removeable and reusable, the heavy-duty design is ideal for use when you need to anchor closer to an edge. the Tapking HD compliments the Ultrawedge+ in the heavy-duty category targeting industries such as racking, conveyor, loading docks, highway bridges, heavy signage and barriers. Code listed under IBC/IRC in accordance with ICC-ES AC193 and ACl 355.2 for cracked and un-cracked concrete. All sizes meet Category 1 Seismic Zone Qualifications - Tension Zone - Cracked Concrete. Zinc plated coating.