Product Description: 1. Application: hubs, designed for 1/4 5 inch reel to reel tape, outer ring diameter 47mm, inner diameter 8.2mm, thickness 10mm. 2. Replacement: Used to replace reel to reel tape's old, aged controllers to enhance the performance of the device. 3. With Mounting Screws: Reel to reel tape controller includes mounting screws to securely hold it in place for easy access to replacement part. 4. : hub is made of professional CNC aluminum block with hard anodized to harden the of aluminum for long service life. 5. Easy To Use: The controller is small in size and light in weight, does not take up too much space, easy to install and remove, convenient to use. Color: Silver Material: Aluminum Alloy Spec: Item Type: Reel To Reel Tape Controller Outer Ring Diameter: . 47mm Thickness: . 10mm Inner Diameter: . 8.2mm / 0.3in Suitable: For 1/4 5 inch Reel to Reel Tape The actual object may have color difference due to different light or display Package Contents: 1 x Reel to Reel Tape Controller 6 x Screw 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.