Premium Quality 4 Pieces 15 Kg Ball Transfer Caster Wheel is a set of four robust ball transfer units designed for efficient, omnidirectional load movement in industrial and commercial environments. Each unit supports up to 18 kg (about 40 lbs), enabling smooth 360-degree rotation and low-friction sliding for precise positioning of moderate-weight objects. This set is ideal for conveyor systems, assembly lines, and workstations where easy transfer without manual effort is essential.