4-pack 6 x 2 inch casters 2 rigid and 2 swivel casters with side brake Polyurethane Iron plate 1000 LBS Capacity per wheel

2 fixed and 2 swivel wheels: 2 fixed wheels that can go straight on a road. 2 swivel wheels can rotate 360° to flexibly transform any direction. And two wheels can be locked with the side brake.
Polyurethane Wheels: Made from the popular non-marking polyurethane rubber type, they absorb shock and vibration, are durable, and roll smoothly and silently on any surface.
1000 LBS Capacity: Each wheel can load up to 1000lbs. Dual ball bearings can offer maximum rolling and require less effort to start rolling and keep rolling.
Heavy Duty Bracket: 5.5mm thickened galvanized steel sheet body is extremely wear-resistant, corrosion and dust-resistant, strong and durable for long service life.
Easy to install: The top plate has four mounting holes for easy and convenient installation, four-hole positioning makes the wheels attach objects firmly, not easy to fall off.