10.5-inch open reel audio tape, 3-inch NAB HUB.

ANALOG TAPES — 10.5 inch reels

Preservation Self-Assessment Program (PSAP)

10.5 NAB Aluminum Reels

An Open-Reel Tape Primer - The Absolute Sound

Audio Tapes Conversion by Greentree Audio Visual

Capture 914 Reel to Reel Audio Tape on New 10.5 Inch Metal Reel With Box, Quarter Inch x 2500 Feet - 1/4 Tape - Reel-to-Reel - Blank Media (Tape, Optical, etc)

Recording The Masters Empty Reels

Capture 914 Reel to Reel Tape 1/4 10.5 inch NAB Spool

🏅PIONEER 10.5 INCH Take Up Reel Empty NAB HUB 1/4. TAPE Black for reel to reel. £63.80 - PicClick UK

Reels For Reel-to-Reel Decks: Types, Sizes & Materials Compared

Reel to Reel Tape, Recording The Masters (RTM/RGMI/PYRAL)