Function: 1. SCOPE OF APPLICATION: Recording receiving spool for use with 1/4 in. spool drives. For use with any open drum. 2. 6 HOLE: The empty receiving spool has an aluminum aircraft NAB flange with a classic pattern of 6 wind-resistant holes for bending resistance and extra strength. 3. STAINLESS STEEL SCREWS: The 1/4 7 inch hollow spool includes stainless steel screws that will not pry or corrode like other brands. 4. EXCELLENT REPLACEMENT: Fix the tape recorder or replace it with a reel to ensure excellent sound quality when recording, erasing, re-recording, etc. 5. SOLID AND DURABLE: The empty roll with 6 holes is made of aluminum and is durable. Low noise and accurate sizes. Specification: Item Type: 1/4 7 Inch Empty Roll Material: Aluminum Alloy Color: Silver Applicable Tape: 1/4 inch Roll Diameter: 7 inches Can be used: universal tape for recording spools Number of Holes: 6 Holes List of packages: 1 x1/4 7 Inch Empty Roll Note: Even for a 7 inch deck, a NAB hub adapter is required for any NAB volume. Remove the product and use it Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-YJL official store