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 {HEAD ~ radius R′} at said {TAIL ~ tumbler ring micro finger root} and radius R at said tumbler ring micro finger crown 
at
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 { HEAD ~ radius R′ } at said { TAIL ~ tumbler ring micro finger root } and radius R at said tumbler ring micro finger crown
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