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.

Wheel locks seem to have great maneuverability. They are easy to lock and unlock. One can barely be spun by hand, gripping the inner and outer races.

Added the wheels to a discarded hutch turned workbench. Used these on a 5' x 5' cabinet. This is like the 3rd of 4th set that i've purchase to use on moveable table to use in my woodshed.

Wheels are sturdy, roll smoothly and lock securely. Handles the weight easily and rotates nicely. The frame and brake petal is heavy gauge steel.

Ordered 2” with brakes, rated for 880 lb total. But the diameter is 1 7/8”, the width is ¾”. Red urethane “tires” on all 4 casters disintegrated after less than 2 years.

Flat spot on the red tire causes bumping noise when pushing a cart in our office. Had to take apart, add 6mm washer between both bearing inner races. Ball bearings rattle loose around the mounting pin/bolt.