Feature: 1. Widely Applicable: 1/4 Inch aluminum NAB hub adapter base is universal for Studer ReVox, for Akai, for Teac, for DENON and other optical reel to reel tape recorders 2. Fine Craftsmanship: Aluminum alloy NAB hub adapter is made with excellent craftsmanship and perfect fit. 3. Perfect Compatibility: NAB hub adapters feature an all metal base for 10inch size reel to reel tape recorders. 4. Full Metal: NAB hub adapter base is made of all aluminum alloy material, the structure is strong, not easy to damage. 5. Simple Operation: for Studer ReVox for DENON's universal loading device is easy to install, simple and convenient to use, requiring little effort to complete. Specification: Item Type: NAB Hub Optical Shaft Adapter Material: Aluminum Alloy Suitable for Studer ReVox, for Akai, for Teac, for DENON and Other Optical Spool Reel to Reel Tapes. Package List: 2 x NAB Hub Optical Shaft Adapter