Set of 8 AudioSerenity Polished Brass Hi-Fi Spike Shoes

I bought these as they were slightly bigger than the 20mm version, but twice the price.They do their job and keep my front floor standing speakers in place (when using spikes on a hard floor)For what they are, they're a bit expensive.If your using monitor or bookshelf speakers, I'd go with the 20mm version and save yourself some money

This is a brilliant product and made a big difference to my audio system.