1. Compatibility: This empty tape reel is suitable for Studer ReVox reel to reel recorders. With a diameter of 5 inch, it fits seamlessly with any open reel deck and is suitable for 1/4 inch tapes. 2. Aluminum Alloy Material: Constructed from premium aluminum alloy, this empty take up reel is long lasting, lightweight, slim, and wear proof. Its robust design guarantees a long lifespan. 3. 4 Hole Design: The aluminum NAB flange features 4 wind resistant holes for to prevent warping and enhance strength, also ensures that the tape reel remains stable during operating. 4. 1/4 Inch Screw: Comes with erosion resistant 1/4 inch screw, no drilling required, detachable. A smoother and more stable tape reel enhances the beloved sound quality and characteristics of magnetic tapes, bringing you an extraordinary sound experience. 5. Enhanced Sound Quality: Revitalize your tape machine or replace old tape reels with this sound tape empty reel, which provides excellent sound quality for recording, erasing, and re recording. [Compatibility with Multiple Brands] This empty tape reel is compatible with for studer, revox, and for nagra reel to reel recorders, providing seamless integration for your recording setup. [Enhanced Stability and Durability] The aluminum nab flange with 4 wind-resistant holes prevents warping and enhances strength, keeping your tapes stable during Operat for consistent sound quality. [Exceptional Sound Quality] Revitalize your tape machine with this sound tape empty reel, providing excellent sound quality for recording, erasing, and re-recording, delivering an extraordinary audio experience. Color: Red/Silver/Gold/Black/Blue Material: Metal Package Contents: 1 x audio tape Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.