When locked it is firm, when unlocked it's a breeze to move on concrete floor. They are great and roll along just fine on the smooth concrete inside and on the brushed rough concrete in the driveway. Esta muy bueno.

Worked perfectly and came quickly when ordered. I need the tv somewhat closer to read the closed captions because i don't hear that great anymore. Then lie back and relax.

It rolls around as smooth as silk, almost effortlessly. The two front casters lock to prevent rolling though they still swivel so there can be some movement. These ones actually aupport the weight they claim they do and even maxed they roll and swivel...  Read More

Wheels are able to handle the load, however, if you start to roll them under weight the brackets started to curl under the load. Completely failed under 400lbs on a smooth cement surface. They bent inward and up so the legs dragged.

This is unacceptable for me and my customer! Very disappointed in these. Ultimately useless for me. As it is, it’s far too wide for my filing cabinet.