A system, comprising, a razor cartridge (104, 204, 604, 704, 804, 904, 1004, 1104, 1204, 1304) including a guard (609, 1199), a cap and two sides connecting the guard and the cap, a front side, and back side with a shaving plane defined by a plane on the front side of the cartridge, defined as a plane across both the guard and cap; the back side of the razor cartridge including a docking structure (224, 624, 724, 824, 924, 1024, 1124, 1224 1324), wherein the docking structure includes a single receiver section, the single receiver section (224, 624, 724, 824, 924, 1024, 1124, 1224, 1324) including a central tab (220, 620, 720, 820, 1020, 1120, 1320) for docking to a handle (102, 202, 302, 402, 502, 702, 1002, 1102), wherein the central tab includes a fulcrum point near the guard at which a handle docking system may hook, and about which a force would be imparted on the cartridge from the handle when in use, wherein a closest distance between the fulcrum point of the central tab and the shaving plane is less than 1 mm for a better shave with less skipping and less torque twist on the razor cartridge and a better pull across the target skin and hair; and a plurality of blades (105, 205, 605, 1305) situated between the guard and cap each with a blade edge parallel to the guard. a razor cartridge (104, 204, 604, 704, 804, 904, 1004, 1104, 1204, 1304) including a guard (609, 1199), a cap and two sides connecting the guard and the cap, a front side, and back side with a shaving plane defined by a plane on the front side of the cartridge, defined as a plane across both the guard and cap; the back side of the razor cartridge including a docking structure (224, 624, 724, 824, 924, 1024, 1124, 1224 1324), wherein the docking structure includes a single receiver section, the single receiver section (224, 624, 724, 824, 924, 1024, 1124, 1224, 1324) including a central tab (220, 620, 720, 820, 1020, 1120, 1320) for docking to a handle (102, 202, 302, 402, 502, 702, 1002, 1102), wherein the central tab includes a fulcrum point near the guard at which a handle docking system may hook, and about which a force would be imparted on the cartridge from the handle when in use, wherein a closest distance between the fulcrum point of the central tab and the shaving plane is less than 1 mm for a better shave with less skipping and less torque twist on the razor cartridge and a better pull across the target skin and hair; and wherein the docking structure includes a single receiver section, the single receiver section (224, 624, 724, 824, 924, 1024, 1124, 1224, 1324) including a central tab (220, 620, 720, 820, 1020, 1120, 1320) for docking to a handle (102, 202, 302, 402, 502, 702, 1002, 1102), wherein the central tab includes a fulcrum point near the guard at which a handle docking system may hook, and about which a force would be imparted on the cartridge from the handle when in use, wherein a closest distance between the fulcrum point of the central tab and the shaving plane is less than 1 mm for a better shave with less skipping and less torque twist on the razor cartridge and a better pull across the target skin and hair; and a plurality of blades (105, 205, 605, 1305) situated between the guard and cap each with a blade edge parallel to the guard.