Viper-Lok allows for various sized rebar to be connected together vertically and horizontally, eliminating tying rebar and accepting #3 through #7 rebar in any combination. It also serves as a standoff with your choice of 2-, 1 1/2-, 1-in., or no standoff. Viper-Lok is perfect for epoxy-coated rebar applications. PolyLok. 888-765-9565. www.polylok.com