This Lego grabber/ gripper/ claw makes use of yellow 24121 “Technic, Gear Rack 11 x 11 Curved” elements. The gear enamel on the elements, and the curved form, makes it good for greedy spherical objects (equivalent to balls, cans and bottles). The black 6628 “Technic, Pin with Friction Ridges Lengthwise and Towball” elements, caught onto pairs of 4185 “Technic Wedge Belt Wheel (Pulley)” elements, create meshing “Dog Gears” that open and shut the claw. Although an EV3 Medium Motor is used to regulate motion, one may substitute a Lego Power Functions Large Motor as an alternative. The gripper might be helpful for FIRST Lego League (FLL) and World Robotics Competition (WRO) occasions.