Soft white felt trichord damper felt strips, about 27" long, 3/8" wide.  Cut to length needed for your application.  Made by Laoureux in France, used by Baldwin as PN #2044-130259

Significant quantity discounts for purchases of 4 or more strips.

I've been full time in the piano repair and restoration business for 30+ years and have installed many, many dampers in that time period. I'm glad to answer any questions you have about this item before or after your purchase - so please feel free to ask. My contact info is included in each shipment and you can also reach me through eBay.