Made in the USA. Monocoque custom composite body and tail-piece, fully articulating low profile head, permanent absolute length markings, proven easy to use adjustment collars, positive snap-in skinny adapter, specialized bend curve, small diameter grip, etc. Pro 1 Carbon booms have exceptional strength to weight properties and incredible torsional rigidity. The boom head fits both standard and reduced diameter masts perfectly. Refined placement of bend curves and straight sections for greater control and comfort. Extensive sail compatibility research for excellent fit and handling properties.