brand-new, unused, unopened, a pair – nab hub adapters,black For Reel-to-Reel Tape Recorders（akai revox sony teac poioneer tascam studer etc…） The bottom is made of hardened ABS plastic material, paired with a hemp pattern design, which is both durable and beautiful. The material of the sealing ring is food grade silicone, which has a long service life and can prevent cracks and fractures