6 Bolt Heavy Duty Imperial Aluminium Shaft Anodes Martyr - 6 Bolt Heavy Duty Imperial Aluminium Streamlined Shaft Anode Easy installation underwater Bolt retaining washers prevent the anode from falling off Full shaft contact: 100% circular radius Interlocking halves Extra alloy around fastener ... MSRP: Was: Now: $51.96 - $102.32 Choose Options