BlackGold Spars by Optiparts have been the first choice of top sailors the world over since they made their debut a few years ago. Nearly every major international championship has chosen them as the ultimate rig for their reliability and proven performance. ·The 2.2 mm thick aircraft alloy 7075 aluminum assures the stiffest (fastest) mast possible. ·NEW! High profile Delrin mast heel plug for lowest possible friction and long wear. ·Stainless steel hook-in block backing plate max strength and no wear ·Through-bolted vang cleat (other manufacturers use pop rivets or screws) ·Comes complete with stainless steel bearing hook-in block, low friction wind indicator with top plugs, sprit handle and halyard. Most sailors chose the 40 mm BlackGold boom, but lighter sailors (up to 95lbs) may prefer the BlackLite “bendy” boom to depower the sail, yet retain speed in the gusts. The BlackMax is best for tall sailors who need the room provided by not having a bridle to get hung up on.