4x 4 inch Heavy Duty 2x Fixed + 2x Swivel Casters Load 520kg Lockable Castor Caster Wheels Swivel Casters with Brakes Staple it also can be a

it also can be a storage box for storing heavy tools

light drafts or high winds

speeding healing blood flow to the injured area

2 x 8-inch wheels

4x 4 inch Heavy Duty 2x Fixed + 2x Swivel Casters Load 520kg Lockable Castor Caster Wheels Swivel Casters with Brakes Staple it also can be aFUNCTION: 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: Swivel With Brake Caster