This Optimist spar set is less stiff than Blackgold spars and is ideal for lightweight Optimist sailors who just started racing. The Silver Optimist mast, boom and sprit are made of high quality aluminium tube. The lightweight 40mm Silver Optimist boom is much stiffer than the 32mm Optimist school boom and will allow the sailor to put more tension on the leach. The 25.4mm Silver Optimist sprit has 15cm anti chafe protection tubing.