These are the same Genuine African Ebony Sharps we use in the RPW key shop for building new keysets, or for installing on used keysets. The sharps are beautifully finished and proportioned and very consistent size. Please check the height of the sharps and choose either 14.0mm or 14.5 mm tall sharps, depending on what’s appropriate. All sharps are 11.5mm wide and 95mm long. Can easily be cut to length to match almost any piano.