Find the core materials technicians rely on to restore proper touch, tone, and quiet operation in both upright and grand pianos. Explore wool damper felts for treble and bass in pre-cut heads, wedge strips, and complete sets for single- and double-string notes; understring felt to protect the soundboard and manage string downbearing; shank rest felt and backrail cloth for keybed cushioning, alignment, and noise control; and flange, key, and guide-rail bushing cloths for accurate, low-friction center pinning. Options include brand-specific materials such as Steinway bushing cloth, key bushing cloth sample kits for matching thickness and firmness, and complementary items like bridle straps and silk cord for common action repairs. Supporting accessories, including cutting blocks, help achieve clean, square cuts. Parts are offered in a range of widths, densities, and grades so you can select the compression, resilience, and fit needed for durable regulation and voicing work; measure original components to match dimensions and use glues appropriate to the application for best results.