Hammer weight set, 1 octave. This kit contains 7 white (part #4920) and 5 black (part #4921) key hammers. A broken key hammer is usually the cause of a key that suddenly feels clunky, or won't return to is normal 'rest' position. These parts have been discontinued by Roland, and now Syntaur has manufactured improved versions of these hammers.

Check out this blog post for helpful instructions on replacing these hammers.

This item is NEW.

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