31mm model suitable for fishing reel:21 FOR for ZILLION SV TW G for STEEZ AtW/CTSV FOR 21SteezHLC. 33.3mm model suitable for fishing reel:for STEEZ AIR 9 speed ratio. 34mmmodel suitable for fishing reel:21 FOR DC 5.6speed ratio/21 FOR DC 7.8speed ratio forXG ,21CQ101.1005.6 speed ratio.
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