An end effector of a surgical tool, the end effector comprising: a first jaw and a second jaw each being pivotable about a first axis ("X1"); a first driven pulley attached to the first jaw and a second driven pulley attached to the second jaw, the first and second driven pulleys being rotatable about the first axis, each driven pulley including a first radial side (130a, 130b) and a second radial side (132a, 132b); a driving pulley rotatable about a second axis ("X2"); a first cable section coupled between a first radial side of a first driven pulley and the driving pulley; a second cable section coupled between a second radial side of the first driven pulley and the driving pulley; a third cable section coupled between a first radial side of a second driven pulley and the driving pulley; a fourth cable section coupled between a second radial side of the second driven pulley and the driving pulley; wherein the first and the second cable sections (S1, S3) are parallel, and the third and the fourth cable sections (S4, S2) cross; wherein a rotation of the driving pulley about the second axis rotates the first and second driven pulleys in opposite directions about the first axis to one of open and close the first and second jaws, characterised in that: (a) the first and the fourth cable sections (S1, S2) are part of a first single continuous cable, and the second and the third cable sections (S3, S4) are part of a second single continuous cable (C 2); or (b) the first and the fourth cable sections (S1, S2) are part of a first single continuous cable, and the second and the third cable sections (S3, S4) are separate cables; or (c) the first and the fourth cable sections (S1, S2) are separate cables, and the second and the third cable sections (S3, S4) are part of a second single continuous cable. a first jaw and a second jaw each being pivotable about a first axis ("X1"); a first driven pulley attached to the first jaw and a second driven pulley attached to the second jaw, the first and second driven pulleys being rotatable about the first axis, each driven pulley including a first radial side (130a, 130b) and a second radial side (132a, 132b); a driving pulley rotatable about a second axis ("X2"); a first driven pulley attached to the first jaw and a second driven pulley attached to the second jaw, the first and second driven pulleys being rotatable about the first axis, each driven pulley including a first radial side (130a, 130b) and a second radial side (132a, 132b); a driving pulley rotatable about a second axis ("X2"); a first cable section coupled between a first radial side of a first driven pulley and the driving pulley; a second cable section coupled between a second radial side of the first driven pulley and the driving pulley; a third cable section coupled between a first radial side of a second driven pulley and the driving pulley; a fourth cable section coupled between a second radial side of the second driven pulley and the driving pulley; wherein the first and the second cable sections (S1, S3) are parallel, and the third and the fourth cable sections (S4, S2) cross; wherein a rotation of the driving pulley about the second axis rotates the first and second driven pulleys in opposite directions about the first axis to one of open and close the first and second jaws, characterised in that: (a) the first and the fourth cable sections (S1, S2) are part of a first single continuous cable, and the second and the third cable sections (S3, S4) are part of a second single continuous cable (C 2); or (b) the first and the fourth cable sections (S1, S2) are part of a first single continuous cable, and the second and the third cable sections (S3, S4) are separate cables; or (c) the first and the fourth cable sections (S1, S2) are separate cables, and the second and the third cable sections (S3, S4) are part of a second single continuous cable. (a) the first and the fourth cable sections (S1, S2) are part of a first single continuous cable, and the second and the third cable sections (S3, S4) are part of a second single continuous cable (C 2); or (b) the first and the fourth cable sections (S1, S2) are part of a first single continuous cable, and the second and the third cable sections (S3, S4) are separate cables; or (c) the first and the fourth cable sections (S1, S2) are separate cables, and the second and the third cable sections (S3, S4) are part of a second single continuous cable.