4 pcs 3 in M8 15mm Threaded Stem Swivel Caster Wheels TPR Mute Furniture Caster
Features:

Smooth and Silent and Sturdy
360-degree rotation, flexible rotation, safe and reliable, strong and durable.
Castor wheels are widely used for Carts, Furniture, dollies, workbenches, trolleys, Flower pot holders, lockers, shelves, etc. 

Specifications:

Material: rubber casters, high-quality cold-rolled steel mounting plate
Wheel diameter: 75 mm/3 in
Wheel width: 25 mm
Load-bearing Capacity: 65kg
Screw Size: M8/8mm
Screw Length: 15mm
Mounting height: 104mm
Weight Swivel x 2 +Swivel with Brake x 2: 1.48kg
Weight Swivel x 4: 1.36kg
Weight Swivel with Brake x 4: 1.6kg