Column spikes

Hi. I have a little problem. A year ago, I bought the PolkAudio RTiA9 speakers. I recently moved to a new house and the spikes on these columns were lost during the move. I would like to buy a set of new ones, but I do not know what parameters should be. I live in Poland and here PolkAudio is not very popular, hence problems with obtaining information. I would be very grateful for your help. regards

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