Fit perfectly on my hand dolly. These are never going flat which great because it is super frustrating when you pull your hand dolly out after it's been sitting for a while and the dang pneumatic tires are flat, or worse yet, only one is flat. These tires are similar to the old Big wheel tires if you remember, except these have steel bearings, so no plastic insert bushing to wear out. They have no give, but do exactly what they are supposed to and stay round, and roll along the ground.