The aluminum boom with a universal bending line is designed for a wide range of uses. The reliable and easy-to-use front end securely attaches the boom to the mast without slipping. With the double-pin adjustment system, the boom can be set to various lengths. Four standard lengths accommodate all main sail sizes. Two shorter lengths with a grip tube diameter of 25mm are ideal for smaller hands (the longer lengths have 29mm tubes). The EPX.AL Boom's universal bending line is compatible with most sail types and brands.