1. SCOPE OF APPLICATION: Aluminum alloy NAB hub adapters are available for Studer , for Akai, for Teac, etc, to meet your various usage needs.2. LOCKABLE: This NAB hub adapter features lockability, no looseness, high standard of rotational concentricity and no shaking.3. POLISHED: A pair of openers with 10 inch size. Superb workmanship, red polish and sizes ensure a fit.4. STURDY AND : The 10 inch openers are made of aluminum alloy and plastic materials, with a strong structure that is not easily damaged.5. EASY TO INSTALL: The loading device is easy to install, universal for reel to reel tape recorders, simple and convenient to use.Spec:Item Type: NAB Hub AdaptersMaterial: Aluminum Alloy, PlasticColor: Red (Polished)Applicable Size: 10 InchesSuitable: Universal for Reel to Reel Tape Recorders NAB Reel Hub AdaptorsFor Studer , for Akai, for Teac, etc.packing list:2 xNAB Hub Adapters