[Features]:
Rotate 360 degrees.
Smooth & Silent & Sturdy. HEAVY DUTY.
The total locking brake locks both the wheel and the swivel
Weight Capality : 300 Lbs
Wheel Material: Polyurethane

[Size]:
Plate Size: 2.55" (65mm) x 3.7" (94mm);
Hole center to hole center: 1.77" (45mm) x 2.95" (75mm);
Mounting hole dimensions: 0.32" (8.3mm) x 0.46" (11.9mm);
Wheel Dia.: 4" (101mm);
Wheel Width: 1.25" (32mm);
Overall Height: 5" (127mm)

[Ball bearings]: Double ball bearings.

[Packing]: 4 caster with brake.

4" Caster Wheels, Swivel Plate Stem Brake, Red Polyurethane, Set of 4