The Simpson Strong-Tie® RCA-C is an ideal solution for attaching stud framing to concrete supports. The connector’s design includes holes for a 1/2-in. diameter anchor screw or bolt, or for two 1/4-in. diameter concrete screws, positioned in a wide array of fastening options — thus saving the installer the time and cost of drilling connector holes at the jobsite. In addition, the RCA-C connector has been rigorously tested and load rated, giving you the confidence of quality and performance for your job.