A device (150, 250, etc) for splicing together a first reinforcement cage and a second reinforcement cage, each of the first and second reinforcement cages (10, 20) extending in a respective longitudinal axial direction between respective ends thereof, the first reinforcement cage comprising a suspension band adjacent one of its ends and the second reinforcement cage carrying the said device (150, 250, etc) adjacent one of its ends, wherein the device (150, 250, etc) is arranged in splicing relationship to the first and second reinforcement cages (10, 20), and is characterised by: an anchoring portion (160, 260, etc) carried on a portion of the second reinforcement cage adjacent its one end and configured or configurable such that at least a portion (160, 260, etc) thereof is spaced from the second reinforcement cage in a radial or transverse direction relative to the longitudinal axial direction of at least the second reinforcement cage so as to define a radial suspension gap between the said portion (160, 260, etc) and the second reinforcement cage, the suspension gap being configured for receiving therein the suspension band on the first reinforcement cage as the first and second reinforcement cages (10, 20) are brought together into a splicing spatial relationship by relative movement thereof in said axial direction; and gate means (180, 280, etc) constructed and arranged so as to be selectively configurable in either an open configuration, in which the suspension band on the first reinforcement cage can be inserted into or received in the suspension gap via the gate means (180, 280, etc) during said axial relative movement of the first and second reinforcement cages (10, 20), or a closed configuration in which the suspension band on the first reinforcement cage, once located in the suspension gap, is prevented from being removed therefrom via the gate means (180, 280, etc), wherein the gate means (180, 280, etc) is moveable between its open and closed configurations by virtue of at least a portion (180, 280, etc) thereof being moveable by pivoting. an anchoring portion (160, 260, etc) carried on a portion of the second reinforcement cage adjacent its one end and configured or configurable such that at least a portion (160, 260, etc) thereof is spaced from the second reinforcement cage in a radial or transverse direction relative to the longitudinal axial direction of at least the second reinforcement cage so as to define a radial suspension gap between the said portion (160, 260, etc) and the second reinforcement cage, the suspension gap being configured for receiving therein the suspension band on the first reinforcement cage as the first and second reinforcement cages (10, 20) are brought together into a splicing spatial relationship by relative movement thereof in said axial direction; and gate means (180, 280, etc) constructed and arranged so as to be selectively configurable in either an open configuration, in which the suspension band on the first reinforcement cage can be inserted into or received in the suspension gap via the gate means (180, 280, etc) during said axial relative movement of the first and second reinforcement cages (10, 20), or a closed configuration in which the suspension band on the first reinforcement cage, once located in the suspension gap, is prevented from being removed therefrom via the gate means (180, 280, etc), wherein the gate means (180, 280, etc) is moveable between its open and closed configurations by virtue of at least a portion (180, 280, etc) thereof being moveable by pivoting.