robotic arm 3d model

industrial robotic arm with hydraulic pistons, heavy load type, 6-axis, metallic clean surface, realistic joints and mechanical details, large hand that can hold 2 cubic meter boxes lifting large boxes, clean topology,high-detail industrial mechanical robotic arm, full hard-surface design, exposed hydraulic pistons on every joint, heavy-duty construction, thick metal plates, factory manipulator style, 6-axis arm, reinforced base, realistic mechanical joints, dual hydraulic clamp gripper with two side pistons, parallel claw design for lifting large boxes, clean topology, sci-fi industrial but functional look