This set of wooden replacement parts is designed for vertical and upright pianos and includes whippen components, whippen flange pieces, and piano hammer butts. Each piece is made from wood and finished with careful workmanship to restore action function and extend the life of the keyboard. Key benefits Restores action performance: Replaces broken or worn whippen and hammer butt parts to recover consistent hammer movement and key . Precise fit and finish: Machined and handfinished wood surfaces provide reliable alignment with existing action parts and smooth mechanical interaction. Practical and easy to use: Components are lightweight and shaped for straightforward installation during routine maintenance or . Durable material: Wood construction offers a balance of strength and responsiveness that is compatible with traditional upright action designs. Important attributes Function: Replacement whippen, whippen flange, and piano hammer butt parts for upright vertical piano actions. Compatibility: Intended for most upright and vertical piano actions that use wooden whippens and hammer butts. Verify part shapes and dimensions against your piano before . Material: Wood construction with attention to workmanship for stable mechanical performance. Performance: Restores reliable hammer travel and key response when replacing worn or damaged action parts. Use scenarios Piano technician replacing a worn whippen flange and hammer butts during an action overhaul to restore touch consistency. Home owner repairing a broken hammer butt on an upright piano to the instrument to playable condition. Piano restoration project where original wooden action parts need likeforlike replacement to preserve mechanical character. Notes for buyers Check the dimensions and shapes of your piano action parts for compatibility prior to installation. Intended as replacement parts only and designed for use with mechanical upright piano actions.