These rugged aluminium beauties offer superb price-toquality value. The 27-mm. Reduced Diameter Grip (RDG) and 29-mm. Standard Diameter Grip (SDG) C-shape offers integrated RDM-mast adapter, slick double-pin adjustment and quality nylon forged head and tail sections for pure durability and comfort. With precision-engineerd bend curves for maximum strength against deflection and distorsion, they shift aluminium booms into a category that rivals all but our ultimate-spec carbon booms for resillence.