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SW(standare type) SW---AJ(adjustment type) SW---OP(open type)Dia: 03-60mm
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SW16 steel retainer the number of ball rows is 5, POM retainer the number of ball rows is 6.
SW16AJ steel retainer the number of ball rows is 5, POM retainer the number of ball rows is 6.
SW16OP steel retainer the number of ball rows is 4, POM retainer the number of ball rows is 5.
