piano wheels

[DogwoodTales]

I would like to replace the wheels on an upright piano we have, so that it will move easier and with less chance of scratching the hardwood floors.
We only move it out from the wall a couple times a month to sweep behind it (amazing how dust and dog hair gets trapped back there), so we're not going to be rolling this all over the place all the time (as maybe would be done in a theater setting).
The factory installed wheels work okay, but am looking for better options.
I would simply use large wheels, but don't want to raise the piano up a lot.

Any experience with something like this here?

Thanks
Ray

[Lynden]

Search for "Dual-Wheel Casters for Piano." Rubber wheels will protect the floor.

http://www.stevespianoservice.com/Online...ters.htm#c 

http://www.ebay.com/bhp/piano-wheels

dual wheel casters for piano

[DogwoodTales]

Thanks!
I didn't know there was a dual wheel option.