The rubber rings inside of the cup-shaped stainless steel washers absorb impact vibrations and keep the hoop and tension bolts in constant contact to prevent from loosening of tension.
Stewart Copeland's signature model is a faithful reproduction of the snare drum of "mysterious provenance" that he used with the Police and everything else from that time period. A brass shell that's 0.5mm thicker than the standard 1mm shell and the combi