Yamamura m6000 speaker cable??

Anyone who knows this cable? I've just bought it 2nd hand. What is the correct way to install it? The seller told me that the side with 3 connectors should go on the amp, but I find it strange that the arrows on the stickers point from speakers to the amp then.. All other cables I know always need to be installed with the arrows pointing from amp to speaker.

Anyone can help me?

Thanks