Item Type: NAB Hub Adapters Material: Aluminum Alloy, Plastic Color: Black White (Polished) Applicable Size: 10 Inches Suitable: Universal for Reel to Reel Tape Recorders NAB Reel Hub Adaptors For Studer ReVox, for Akai, for Teac, etc. Package List 2 x NAB Hub Adapters 1Widely Compatible: Aluminium NAB hub adapters are available for Studer ReVox, for Akai, for Teac, etc. to meet your various use needs. 2Fine Crafted: Aluminium 10 Inch opener are superbly crafted for a perfect fit, black polished metal handle and white base, and are available in 10 inch sizes. 3Premium Material: Reel to reel tape recorders NAB reel hub adaptors are made of premium aluminum alloy and plastic material, the structure is strong and not easy to damage. 4Superior Performance: NAB hub adapters have lockability, no looseness, high standard of rotational concentricity and no wobble. 5Simple Installation: Universal loading device for Studer ReVox is easy to install, simple and convenient to use, and requires little effort to complete.