Audio-Technica ATUC-F13 Foam InsertFoam insert fits SKB 3R2817 10 case or equivalent. Cutouts in foam designed to securely hold and protect 10 ATUC IRDU infrared discussion units, 10 ATUC M43H, ATUC M58H or ATUC M32L microphones, 20 LI 240 lithium ion batteries, one ATCS B60 charger, and one small accessory. Case not included. For wireless DUs, mics, and accessories only. Foam insert fits SKB 3R2817 10 case or equivalent. Cutouts in foam designed to securely hold and protect 10 ATUC