The ones I’ve seen have the "terminator" on EACH end and are marked "loudspeaker" and "amplifier".
Maybe that’s why you got a great deal...
https://www.usaudiomart.com/details/649361124-monster-cable-22s-mseries/
Maybe that’s why you got a great deal...
https://www.usaudiomart.com/details/649361124-monster-cable-22s-mseries/