【Specification】 【Product name】: Caster Wheels 【Material】: PU+Metal 【Colour】: Black + Orange 【Size】: As Shown 【Diameter】: 50mm 【Mounting height】: 73mm 【Bearing】: double bearing 【Wheel width】: 24mm 【Scope of application】: industrial casters, electrical casters, furniture casters/office furniture/home/hardware 【Parts List】 4 x 2 inch Caster Wheels 1 x Screwdriver 16 x Screw Nuts 16 x Screw Spacer [Heavy Duty But Quiet] The heavy-duty casters have a load-bearing capacity of 150 lbs, and each set of 4 can carry more than 600 lbs. Strong carrying capacity. They have a soft, cushioned rubber tread that rolls smoothly and quietly on smooth or rough surfaces. [360° Smooth Swivel & With Brakes] Heavy-duty casters with ball bearings can swivel 360 degrees very smoothly and quietly, allowing you to turn with ease, dust and debris-resistant, long service life. Casters with wheel brakes apply pressure to the wheels to stop movement by depressing the foot pedal. [Protect Your Floor] The polyurethane covering the steel wheels effectively protects the floor while rolling quietly and easily. [Easy to Install] The set comes with 4 casters, 1 screwdriver, 16 screw nuts, 16 screw washers, which can be installed in seconds. [Wide Application] These casters can be used for workbenches, carts, furniture, trolleys, shelves, wooden boxes, industrial appliances, and more. Ideal for office and home furniture.