Koss KSH1 Hold-a-Phone Stereophone Hook, Black Hold-a-Phone stereophone hook, a unique way to display or store any Koss Stereophone Hold-a-Phone is the perfect headphone accessory for at-home storage. Designed to fit on any shelf or entertainment center for convenient storage, theKoss Hold-a-Phone simply slides in place for a stable and strong hold of any stereophone. Constructed with polyethylene plastic, there is no need for screws and is easily portable.