Chinook Pro Alloy 135-197 Monocoque body, custom alloy, fully articulating head, absolute length markings, proven easy to use adjustment collars, positive snap-in skinny adapter, modern bend curve, etc.  Pro 1 Alloy booms have exceptional torsional rigidity and fit both standard and reduced diameter masts perfectly. The addition of absolute length markings on a generous 62cm tail-piece aid with rigging your sail properly. The rounded curve of the 135 model makes hand transitions during jibes, tacks, and the most advanced freestyle moves feel natural. Range: 135-197cm, Grip Diameter: 29mm - 1 1/8", Weight: 5.6 lbs, Inside Width: 36.5cm

Chinook Pro Alloy Boom 135, Chinook Windsurfing Boom pro alloy 135, Chinook 135 Pro alloy Boom, Chinook 135 Boom, Chinook Pro Alloy 135-197 Boom, Chinook Pro alloy 135-197 Windsurfing Boom, Chinook 135 Pro Alloy Aluminum Boom, Chinook aluminum Windsurfing Boom, Chinook Booms 135 Pro Alloy Aluminum, Chinook Monocoque Windsurfing Booms 135-197, Chinook Monocoque windsurfing boom 135 pro alloy