Hi-Lok And Hi-Lite Installation Ratchet Assembly 3/8” x 5/64” Description: Omega Technologies Hi-Lok and Hi-Lite Installation Ratchet Assembly includes a 5/64” Hex Key and a 3/8” Socket. Omega Technologies ATHA12 is equivalent to the Hi-Shear HLH110-375-078. Omega Technologies Installation Assemblies are hand tool assemblies for the installation of the Hi-Lok or Hi-Lite fastening systems that include a hand ratchet wrench with a through hole, a socket, and a plastic handle Allen Wrench. The through hole in the hand ratchet allows for the insertion of an Allen key. A plastic handle or T Handle Allen Wrench with a replaceable blade is furnished, but any Allen Key style can be used in conjunction with the ratchet. The socket is held to the square drive with a set screw which eliminates FOD.