A fluid cartridge for use with a hand-held applicator including a plunger movable within a plunger channel, wherein the cartridge is formed to store and dispense two fluids (78, 80), comprising: an outer cartridge wall being cylindrical and defining a hollow interior having an inner diameter, the outer cartridge wall further having an outer diameter, a front end and a back end defining an outlet at the front end; an end cap having a neck and a seating collar that are adapted to seat in the hand-held applicator, wherein the end cap is connected to the outer cartridge wall at the back end and defines an open end, the neck having an inner and outer diameter smaller than the inner diameter of the hollow interior formed by the outer cartridge wall, the seating collar having an inner diameter being the same as the inner diameter of the neck and an outer diameter being larger than the outer diameter of the neck: a delivery tube disposed within the outer cartridge wall and defining an outlet that is co-located with the outlet defined by the outer cartridge wall; a first piston disposed between the outer cartridge wall and the delivery tube forming a first fluid chamber; a second piston disposed within the outer cartridge wall between the first piston and the open end of the end cap, the second piston comprising a plunger extension being adapted to engage an extension of the plunger when the plunger enters the end cap; a fixed wall disposed between the first piston and the second piston, wherein the fixed wall and the second piston define a second fluid chamber; and a transmission structure disposed between the second piston and the first piston for transmitting force from the second piston to the first piston. an outer cartridge wall being cylindrical and defining a hollow interior having an inner diameter, the outer cartridge wall further having an outer diameter, a front end and a back end defining an outlet at the front end; an end cap having a neck and a seating collar that are adapted to seat in the hand-held applicator, wherein the end cap is connected to the outer cartridge wall at the back end and defines an open end, the neck having an inner and outer diameter smaller than the inner diameter of the hollow interior formed by the outer cartridge wall, the seating collar having an inner diameter being the same as the inner diameter of the neck and an outer diameter being larger than the outer diameter of the neck: a delivery tube disposed within the outer cartridge wall and defining an outlet that is co-located with the outlet defined by the outer cartridge wall; a first piston disposed between the outer cartridge wall and the delivery tube forming a first fluid chamber; a second piston disposed within the outer cartridge wall between the first piston and the open end of the end cap, the second piston comprising a plunger extension being adapted to engage an extension of the plunger when the plunger enters the end cap; a fixed wall disposed between the first piston and the second piston, wherein the fixed wall and the second piston define a second fluid chamber; and a transmission structure disposed between the second piston and the first piston for transmitting force from the second piston to the first piston. a delivery tube disposed within the outer cartridge wall and defining an outlet that is co-located with the outlet defined by the outer cartridge wall; a first piston disposed between the outer cartridge wall and the delivery tube forming a first fluid chamber; a second piston disposed within the outer cartridge wall between the first piston and the open end of the end cap, the second piston comprising a plunger extension being adapted to engage an extension of the plunger when the plunger enters the end cap; a fixed wall disposed between the first piston and the second piston, wherein the fixed wall and the second piston define a second fluid chamber; and a transmission structure disposed between the second piston and the first piston for transmitting force from the second piston to the first piston.