Description Case - display for heads and related turntable head holders The AT6003R is a case/display designed to hold three sets of cartridges with associated headshells. Equipped with three housings with transparent capsules that protect against UV rays, it holds the heads with their headshells firmly in an upright position. A slot on the side of each capsule accommodates the finger lift of the head. Rubber feet on the bottom of the case provide added stability. The heads are not included with the AT6003R.