A surgical staple cartridge , comprising: a cartridge body defining a cartridge axis (CA) in a proximal-to-distal direction and comprising a first cartridge wall and a second cartridge wall spaced from said first cartridge wall , said first and second cartridge walls arranged in first and second planes respectively which are parallel to the cartridge axis (CA) and on a first side of said cartridge axis (CA), the first and second planes being parallel to each other, said cartridge body further comprising at least two driver guides upstanding in a first direction parallel to the first and second planes and perpendicular to the cartridge axis (CA) and located between said first cartridge wall and said second cartridge wall , the at least two driver guides comprising a proximal driver guide arranged proximally to a distal driver guide ; at least one surgical staple driver , comprising: a driver body comprising a proximal end configured to slidably engage said proximal driver guide in said first direction and a distal end configured to slidably engage said distal driver guide in said first direction; and at least one staple support member , each staple support member configured to operably support a surgical staple (820a-c) thereon, characterized in that : the driver body of said at least one surgical staple driver comprises a proximal hooked-shaped slot when viewed in the first direction that is configured to be engaged by a corresponding hook-shaped portion of the proximal driver guide , and a distal hooked-shaped slot when viewed in the first direction that is opposed to the proximal hooked-shaped slot and that is configured to be engaged by a corresponding hook-shaped portion of the distal driver guide a cartridge body defining a cartridge axis (CA) in a proximal-to-distal direction and comprising a first cartridge wall and a second cartridge wall spaced from said first cartridge wall , said first and second cartridge walls arranged in first and second planes respectively which are parallel to the cartridge axis (CA) and on a first side of said cartridge axis (CA), the first and second planes being parallel to each other, said cartridge body further comprising at least two driver guides upstanding in a first direction parallel to the first and second planes and perpendicular to the cartridge axis (CA) and located between said first cartridge wall and said second cartridge wall , the at least two driver guides comprising a proximal driver guide arranged proximally to a distal driver guide ; at least one surgical staple driver , comprising: a driver body comprising a proximal end configured to slidably engage said proximal driver guide in said first direction and a distal end configured to slidably engage said distal driver guide in said first direction; and at least one staple support member , each staple support member configured to operably support a surgical staple (820a-c) thereon, characterized in that : a driver body comprising a proximal end configured to slidably engage said proximal driver guide in said first direction and a distal end configured to slidably engage said distal driver guide in said first direction; and at least one staple support member , each staple support member configured to operably support a surgical staple (820a-c) thereon, characterized in that : the driver body of said at least one surgical staple driver comprises a proximal hooked-shaped slot when viewed in the first direction that is configured to be engaged by a corresponding hook-shaped portion of the proximal driver guide , and a distal hooked-shaped slot when viewed in the first direction that is opposed to the proximal hooked-shaped slot and that is configured to be engaged by a corresponding hook-shaped portion of the distal driver guide <EOS>