MK3 Medium spar set for Optimist. Suitable for sailors weighing between 30 and 40 kg. Material: Superior Lanurep spacecraft alloy Anodised: Premium hard dark grey MK3 medium mast (OX25AB3M) MK3 40 mm boom (OX35M3) MK3 27 mm boom (OX45M3) Supplied with the rigging pack (OX25): 1 x Harken ball bearing attachment block 1 x 25mm low friction Windesign ring 1 x Windesign PRO wind indicator 1 x Deck clamp with mast sleeve 1 x Nylon sprit adjusting handle 2 x Nylon top pins 1 x Dyneema primary halyard 1 x Technora / Dyneema secondary halyard 5 x 2.2 mm mooring lines 12 x 1.2 mm double lines