SHIMANO Y00091210 steel ball 3/16 20pcs For WH-6800/RS81/R500-F/RS500-R/RS370/RX31-R12/RX830-TL-R/M785/M788/M8000/M8020/MT68 MT66-R12; FH-6800/CX75/M828 825 820/M810 815/M8000 8010/M785 788/M7010/M678/M640 645 648/M6010/M618/T780; HB-R505/M618/M495/M475/M3050/MT200/T3000/TX800/TX500/TX505