Yes, silver Litz. The Audio Note UK wire; NOT the Kondo/Audio Note Japan wire which, as Lew says, can cost a small fortune. There is a bit of mystery around what exactly differentiates the two versions of the wire. Some claim the Kondo is the best. I use the AN UK wire in my ET2 and I think it is fantastic.
https://www.hificollective.co.uk/wire/audio-note-silver-internal-tone-arm-wire.html
https://www.hificollective.co.uk/wire/audio-note-silver-internal-tone-arm-wire.html