Hi Rick. Most of my clients buy the inch sized zincs without the copper insert ( easy to find ) and ream or drill the hole slightly larger to accept the somewhat larger metric fastener. I did this on all three Amel boats I owned with excellent results. Metric zincs are hard to find in CONUS and the ones I did find in Annapolis were three times as expensive.

Hope this helps.

All the best,

Joel

           JOEL F. POTTER ~ CRUISING YACHT SPECIALIST, L.L.C.

                                         The Experienced AMEL Guy

UNSURPASSED AMEL MARKETING EXPERIENCE AND PRODUCT KNOWLEDGE

                                  Office 954-462-5869  Cell 954-812-2485