4 inch Heavy Duty Casters Lockable Caster Wheel Swivel Casters Castor with Brakes for Furniture and Workbench Cart free-shipping It uses electronic frequencies to

It uses electronic frequencies to create vibration in water

or just as home fragrance

such as USB storage drives

cruciform grip ground design makes the product more firm

4 inch Heavy Duty Casters Lockable Caster Wheel Swivel Casters Castor with Brakes for Furniture and Workbench Cart free-shipping It uses electronic frequencies toFUNCTION: These high capacity casters are ideal for lite and medium duty material handling, carts, loading equipment, and work shop projects providing a highly maneuverable, stable, non marring and versatile caster solution PREMIUM DESIGN: The 4" casters feature a polyurethane protective wheels, integrated steel sleeve bearings, and a sleek modern industrial design ideal for work or exterior design elements SPECIFICATIONS: Heavy Duty Swivel With Brake