The temperament strip is designed to mute the outer strings, allowing for tuning of two octaves simultaneously. The mutes are crafted from durable rubber for long-lasting use. The tuning hammer features a wooden handle for comfort and ease during the muting process. Four mutes (two with handles) are tapered for more efficient muting of sections. With these tools, you can complete piano repairs independently, gaining new skills while saving money. This essential kit is perfect for piano players undertaking tuning tasks. Specification: Handle Material: Metal Mutes Material: Rubber Color: As shown in pictures Temperament Strip Size (LxW): Approx. 104x3cm/40.94x1.18inch Tuning Hammer Size (LxW): Approx. 15x4cm/5.90x1.57inch Long Mute Size: Approx. 10x1.3x1cm/3.93x0.51x0.39inch Mute with Handle (LxW): Approx. 22x2.5cm/8.66x0.98inch Includes: 2 x Long Mutes 2 x Short Mutes with Handle 1 x Temperament Strip 1 x Tuning Hammer