<p>A connection apparatus (1) adapted to removably connect the ends of a first arm (2) and a second arm (3) to form a working boom. The connection apparatus includes a body provided with a fixed connection to the first (2) of said arms, the body being adapted to be removably connected to attachment pins (9) projecting from the second arm (3). The connection apparatus also includes a retention means formed as a pair of fixed hooks (8) which are adapted to engage with projecting attachment pins (9) on the second arm (3). A locking means comprising a swinging hook (11) operated by ram (12), is movable between an engaged position wherein the locking means when moved to an engaged position is engaged with at least one attachment pin (9) of the second arm (3), and a disengaged position.</p>
