Feature 17 Inch: This is an empty tape reel for use with reel to reel tape players. This reel fits on any open reel deck that 1/4 7 inch diameter tape. 23 Hole Design: 1/4 7 inch empty reel, aluminum for NAB flange with 3 wind resistant holes for added strength and resistance to bending. 3Perfect Replacement: Restore your tape recorder or replace it with a new reel to give you perfect sound quality for Recording, erasing, re recording, etc. 4Professional Design: Tape empty reel is professionally designed with accurate and low noise to meet your needs. 5Aluminum Alloy: Empty reel is made of aluminum alloy, which is wear resistant and not easily damaged.Item Type:1/47InchEmptyReelMaterial: Aluminum AlloyApplicable Tape: 1/4inReel Diameter: 7 InchNumber of Holes: 3 HolesApplicability: Universal .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }Package List1 x 1/47InchEmptyReelNoteEven with a 7 inch capacity deck, a deck NAB hub adapter is required for any NAB volume.