These are brand new (custom-made for us) clamp-type NAB reel hub adaptors.

They fit Pioneer, Akai, Tascam, Fostex, Teac, Tandberg, Technics, Revox and other 1/4" reel-to-reel decks that take 10.5" reels and have screw-type or spring-loaded reel retainers.

They are shown above mounted on a Teac A-3300SX (screw-type) and a Revox A77 (spring-type). These are EXACT duplicates of ones once supplied by Teac with many of their models; note the comparison picture above showing the Teac original on the left and our version on the right. Several other manufacturers once made similar one-piece adaptors, including Pioneer, Akai and Wollensak. Our hubs have no removable or moving parts and are virtually indestructable. This is a "reel" hard item to find, but we have them!