Features 1.1/4 7 INCH: Empty tape reel is suitable for use with reel to reel tape players. This reel fits on any open reel deck that 1/4 7 inch diameter tape. 2.11 HOLES: Empty reel features an aluminum for NAB flange with a classic for Ampex design 11 hole windage hole for flex resistance and added strength. 3.PERFECT REPLACEMENT: Restore your tape recorder or replace it with a new reel to give you perfect sound quality for recording, erasing, re recording, etc. 4.ALUMINUM ALLOY: 1/4 7 inch empty tape reel is made of aluminum alloy, which is wear resistant, corrosion proof, and not easily damaged. 5.HIGH PERFORMANCE: Tape takeup reel is high output, low noise, and gives you the sound and character of the tapes you know and love. specificationItem Type: Empty Tape Reel_x000D_ Product Material: Aluminum Alloy_x000D_ Applicable Tape: 1/4 Inch_x000D_ Reel Diameter: 7 Inch_x000D_ Applicability: Universal_x000D_ Number of Holes: 11 Holes PackageList1 x EmptyTapeReel NoteEven with a 7 inch capacity deck, a deck for NAB hub adapter is required any for NAB volume.