Barnacle Busters50686 Swirl-Off Nut For Barnacle BustersSKU: 50686 The 50686 Swirl-Off nut is used for all 6″ barnacle busters. Add to quote Related products Barnacle BustersStanley Infrastructure GR29310 Underwater Hydraulic Grinder Accessories50600 Swirl-Off 6″ Barnacle Buster View product Barnacle Busters50685 Swirl-Off Barnacle Buster Inner Retaining Cup View product Barnacle Busters50631 Swirl-Off Heavy Duty Quick Change Cutters (Set of 7) View product