Full Shimano SLX 12 speed groupset, The whole groupset has only done 300 miles, Cranks are 170mm and 30t chainring, cassette is for microspline and 10-51, It’s threaded Bottom bracket ...

That isn’t a line from an ’80s Japan-panic flick. It’s a (slightly adapted) post at Tapeheads, an online forum for cassette tape enthusiasts. Tanashin is a Japanese audio hardware company.