Instant Mobility: This set of four heavy-duty casters is designed for instant mobility. With a stem mount (5/16 inch, length 0.98 inch), they attach quickly and securely to small to medium-sized tool carts, furniture, and other common items in workshops, garages, kitchens, and offices. High Load Capacity: Each caster in the set has a maximum load capacity of 150 lbs, allowing for a total capacity of 600 lbs when used together. These reliable casters are built to handle heavy loads and provide smooth rolling on hard, smooth surfaces like concrete, while maintaining stability with their dual locking mechanism. Quiet and Smooth Movement: Enjoy quiet and smooth movement with these casters. Their non-marking polyurethane wheels ensure quiet operation, making them suitable for a variety of environments, including warehouses, retail stores, restaurants, schools, and hospitals. Say goodbye to vibrations, rattles, squeaks and other disturbances during transport. Improved Stability and Safety: The casters are equipped with a double locking mechanism that ensures that both the wheel and the swivel bearing are locked at the same time. This important feature provides increased stability and safety during use, giving you peace of mind in any environment. The set includes four lock nuts for easy installation. Versatile Applications: The possibilities are endless with casters. They can be used effectively on workbenches, instrument cases, art tables and a wide range of other furniture and carts. Where mobility is needed, these casters provide a quick and convenient solution, allowing you to easily move your items. Mounting Type: Stem Mount Stem Diameter: 5/16 inch Stem Length: 1 inch Wheel Diameter: 2 inch Swivel Casters with Brake: Yes Silent Polyurethane Casters: Yes Maximum Load Capacity: 150 lbs/wheel Enjoy a hassle-free installation process with these stem mount casters. Simply attach them securely to your desired surface and experience improved mobility and convenience. Color: Black Material: Steel Package Contents: 4pcs x Heavy Duty Casters The above package contents only, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3 cm.