Duotone Boom EPX.ALThe proven, easy to use front end fixes the boom securely to the mast without any slippage. Thanks to the double pin adjustment system, the unit can be adjusted to a wide range of lengths. Four basic lengths cover all of the key sail sizes. The two small lengths with a grip tube diameter of only 25 mm are specially designed for smaller hands (large lengths with 29 mm tubes). The universal bending line of the EPX. AL Boom is suitable for almost all