Features: The temperament strip is to mute off the outside strings  and one is enough to tune two octaves at a time. The mutes are made of rubber to assure long time use. Tuning hammer with wooden shank is for ease and comfort while doing mute job. Four mutestwo with handles are tapered for more easily muting the section. With the tools, you are able to finish the piano fixing job by yourself and learn some kind of new ability during this process and also money-saving. Indispensable kit set for piano players to do piano tuning work. Specification: Condition: 100% and Handle Material: Metal Mutes Material: Rubber Color: Shown as pictures Temperament Strip SizeLxW: Approx. 104x3cm/40.94x1.18inch Tuning Hammer SizeLxW: Approx. 15x4cm/5.90x1.57inch Long Mute Size: Approx. 10x1.3x1cm/3.93x0.51x0.39inch Mute with HandleLxW: Approx. 22x2.5cm/8.66x0.98inch Weight: Approx. 55g Packing List: 2 x Long Mutes  2 x Short Mute with Handle 1 x Temperament Strip 1 x Tuning Hammer