Revolutionary Simpson Strong-Tie® Quick-Lock® Unibar® centralizers are the answer to threaded-rod, rebar and tendon alignment support in earth-retention applications. They keep the rod, bar or tendon centered in the bore/drill hole to allow for minimum grout/concrete coverage and do not impede flow of grout within bore/drill hole. Installs quickly by simply snapping the two identical halves together over the rod, bar or tendon and tying it on with tie-wire or zip ties. The end tabs are offset to fit between rebar threads.