Speaker pin, quick release,mushroom handle,All in stainless steel,pin dia 5/6/8/10/12/16/20,length 10~100
https://www.vogueparade.com/shopping/EN/42/1/32863628133/speaker-pin-quick-releasemushroom-handleall-in-stainless-steelpin-dia-56810121620length-10100//