A tool for manipulating a solid material target with combustion products from a propellant, wherein the propellant is a generally explosive material, which has a low rate of combustion and once ignited produces propellant gas via at least one of burning, decomposing or deflagrating, the tool comprising: a housing comprising at least one outlet for combustion products produced by ignition of at least one propellant source, wherein the at least one propellant source is contained within the housing, wherein the propellant source is a location of propellant provided for ignition; and an ignition mechanism for igniting propellant at the at least one propellant source; wherein the at least one outlet comprises a plurality of exit ports (6, 8) on a surface of the tool, wherein, prior to ignition of the propellant, the plurality of exit ports (6, 8) are sealed with a fusible material and after ignition of the propellant source the fusible material melts due to heat generated by ignition, thereby opening the plurality of exit ports (6, 8); the plurality of exit ports (6, 8) being configured, when open, to direct the combustion products at the target wherein interaction of the combustion products with the target manipulates the target; and wherein the plurality of exit ports (6, 8) comprises a principal exit port and at least one secondary exit port, the at least one secondary exit port being spaced apart from and at least partly surrounding the principal exit port, wherein the secondary exit port or ports is/are arranged relative to the principal exit port such that, in use of the tool, a jet or jets of combustion products emanating from the secondary exit port or ports substantially surrounds or surround, thereby shrouding, a jet of combustion products emanating from the principal exit port. a housing comprising at least one outlet for combustion products produced by ignition of at least one propellant source, wherein the at least one propellant source is contained within the housing, wherein the propellant source is a location of propellant provided for ignition; and an ignition mechanism for igniting propellant at the at least one propellant source; wherein the at least one outlet comprises a plurality of exit ports (6, 8) on a surface of the tool, wherein, prior to ignition of the propellant, the plurality of exit ports (6, 8) are sealed with a fusible material and after ignition of the propellant source the fusible material melts due to heat generated by ignition, thereby opening the plurality of exit ports (6, 8); the plurality of exit ports (6, 8) being configured, when open, to direct the combustion products at the target wherein interaction of the combustion products with the target manipulates the target; and wherein the plurality of exit ports (6, 8) comprises a principal exit port and at least one secondary exit port, the at least one secondary exit port being spaced apart from and at least partly surrounding the principal exit port, wherein the secondary exit port or ports is/are arranged relative to the principal exit port such that, in use of the tool, a jet or jets of combustion products emanating from the secondary exit port or ports substantially surrounds or surround, thereby shrouding, a jet of combustion products emanating from the principal exit port.