{TAIL ~ a combination tumbler ring} having an inside radius for engaging said hub and an outside circumference digitated with a plurality of tumbler ring micro fingers, each of said plurality of tumbler ring micro fingers having a tumbler ring micro finger root and a tumbler ring micro finger crown, said outside circumference having radius R′ at said {HEAD ~ tumbler ring micro finger root} and radius R at said tumbler ring micro finger crown 
{ TAIL ~ a combination tumbler ring } having an inside radius for engaging said hub and an outside circumference digitated with a plurality of tumbler ring micro fingers , each of said plurality of tumbler ring micro fingers having a tumbler ring micro finger root and a tumbler ring micro finger crown , said outside circumference having radius R′ at said { HEAD ~ tumbler ring micro finger root } and radius R at said tumbler ring micro finger crown
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