English Description: Professional 3", 4", 5" medical-grade dual-wheel castors with 360 swivel rotation and total braking system, designed for hospital beds, trolleys, or heavy-duty medical equipment. Features threaded stem for secure screw-mount installation, durable nylon wheels, and rust-resistant construction. Ideal for clinical, lab, or industrial environments requiring stability and precise mobility. Key Features: Sizes: 3", 4", 5" dual wheels for superior weight distribution (100mm/125mm options). Swivel Total Brake: Smooth multidirectional movement + instant full-wheel locking. Threaded Stem: Corrosion-resistant screw-fix design for permanent attachment. Medical Compliance: Hygienic, easy-clean materials meeting safety standards. Perfect for medical carts, stretchers, or mobile devices requiring robust maneuverability and safety in high-traffic healthcare settings. Suitable for loads up to [XX kg] per castor.