One bichord (2 strings per note) Old Style 1 3/4" long by 3/8" wide damper head felt for vertical pianos. Pad for gluing to damper head is centered on the back (offset versions available in my eBay store). The 1 3/8" size is more common (item #291695485172) but I do see this size on some very old (1880's-1890's) upright pianos. Bichord dampers are typically used on the higher bass notes on the piano and sometimes low treble (any notes with 2 strings per note). Additional sizes available in my eBay store. Measure existing felt to best determine your needs.

I've been full time in the piano repair and restoration business since 1985 and am glad to answer any questions you have about this item before or after your purchase. My contact info is included in each shipment and you can also reach me through eBay.