Foam insert fits SKB 3R2817-10 case or equivalent. Cutouts in foam designed to securely hold and protect one ATUC-50CU wired control unit, four ATUC-50DU wired discussion units and four ATUC-M43H, ATUC-M58H or ATUC-M32L microphones. Case not included. For wired CU/DUs and mics only.