The 40 mm BLACKGOLD™ MEDIUM boom is a stiff and lightweight boom which is suitable for the majority of sailors. It is made from high grade, tempered tube. Fitted with captive eye straps, black nylon in- and outboard end fittings, nylon outhaul cleat, 4 mm Vectran (or Dyneema) outhaul and bridle, and a Vectran (or Dyneema) vang and outhaul trim gauge.