These are crystal clear poly boxes for audio cassettes.
Here are some surplus poly boxes
Hubs from audio cassette pancakes
C-30 (15:00 per side) Pink cassette shell , transparent leader, tabs out, Voice Grade.
13 minutes (6:30 per side) of super ferro audio tape in a clear sonic-welded TABS IN cassette shell TINRCLEARSWL
Quad Jewel Box. Current stock has black trays pre-assembled. View wholesale pricing...
C-07 ( approximately 06:30 per side ) White cassette shell on side A and Red cassette shell on side B , clear leader tape, tabs out, loaded with hi-fi tape.
C-16 (8:00 per side) in a clear sonic cassette shell, metallic gold foil liners, red leader, tabs out, loaded with vintage (pre-2018) Super Ferro music grade audio tape.
C-16 ( approximately 08:00 per side ) Transparent cassette shell , clear leader tape, tabs out, loaded with hi-fi tape.
C-17 (8:31 per side) in a gold tabs out sonic shell with clear leader, tabs out, loaded with vintage (pre-2018) super ferro music grade audio tape
C-20 (10:00 per side) in a clear 5-screw cassette shell, graphite liners, frosted leader, tabs out, loaded with Hi-Fi music grade audio tape.
C-20 ( approximately 10:00 per side ) Opaque Yellow cassette shell, frost leader tape, tabs out, loaded with music grade tape.
C-25 music-grade tape in a black cassette TONRBLACKSW
52 to 54 minute (26+ minutes per side) normal bias ferro tape in an old-school grungy off-white Type 1 shell, tabs OUT, 5 screws. 1990s vintage cassettes, mediocre quality tape for a distortion effect.
29 minutes (14:30 per side) of very high quality (BASF) audio tape in a classic 90s 5-screw cassette shell. These are already printed so you have to put paper labels over them. The music has been erased.
C-09 ( approximately 4:30 per side ) Tint green cassette shell, frost leader tape, tabs out, loaded with hifi tape.
C-10 ( approximately 05:00 per side ) Smoke Tint cassette shell, frost leader tape, tabs out, loaded with hi-fi tape.
C-12 ( approximately 06:00 per side ) Clear cassette shell with black liners, clear leader tape, tabs out, loaded with RTM fox tape.
C-15 ( approximately 7:30 per side ) Clear cassette shell, frost leader tape, tabs in, loaded with hi-fi tape.
C-19 ( approximately 09:30 per side ) Electric blue cassette shell, clear leader tape, tabs out, loaded with hifi tape.
C-20 (10:00 per side) Baby Blue Cassette Shell , transparent leader, tabs out, loaded with hifi tape.
C-20 ( approximately 10:00 minutes per side ) Mint green cassette shell , frost leader , tabs out , loaded with fox tape.
C-21 ( approximately 10:30 per side ) White cassette shell, clear leader tape, tabs out, loaded with hi-fi tape.
C-23 ( approximately 11:30 per side ) Front white and back red cassette shell, transparent leader tape, tabs out, loaded with fox tape.