Fred, Perhaps what you are looking for are the Darnell Double casters found on page 136 of the Schaff catalog. You may want to contact Steinways Technichal Services Administrator David Kirkland, dkirkland@steinway.com or 718.721.2600. He could probably help you find the casters to fit the piano. Doug Atkins Registered Piano Technician Cedarville University 937.766.7566 atkinsd@cedarville.edu
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