Specification:

Quantity: 4 Pack
Wheel Size: 3 Inch
Material: Alloy steel, Rubber
Wheel Color: Red

Description:

Heavy duty casters: Casters are made of high-strength industrial grade galvanized steel, precision ball bearings and polyurethane to ensure sturdy, while the wear-resistant, noise-reducing steel balls ensure smooth rolling.
Brake Locking casters: Industrial casters with double locking and double ball bearings are the greatest safety, and the brake locks the wheel and the rotating mechanism at the same time, effectively preventing the device from moving and potential injury.
Swivel casters: 360 degree rotating plate casters with ball bearings, smooth rotation, heavy objects easily and smoothly transported from one place to another, without leaving any traces on the floor.
Wide application and easy installation: Caster wheels heavy duty can be used for workbench, ,furniture for cart, trolley, shelf, wooden cabinet bench etc.
Good quality, good operation.
Please check pictures for more details.
If you have any issues about the model, please contact with us!

Feature:

Casters are easy to install and items can be moved easily. 
Caster brakes are easy. You can stop if you want. It's easy. 
Easy to roll and quiet trackless, better protecting the ground, and can roll on a variety of surfaces. These casters are suitable for both indoor and outdoor applications. Suitable for wheelbarrow, trolley, workbench, toolbox, machinery, cabinets, supports, furniture, shelves and other places, such as: workshop, garage, kitchen and office, balcony, laundry room, utility room, school, shop, etc 

Package details include:

4 PCS 3" Caster Wheels

(You will receive exactly what you see on the picture.)
If you have any questions please contact us anytime.