1.【Piano Tuning Wrench】: L-shaped design, made from hard stainless steel and wood handle, durable &abrasion-resistance , easy to use and portable to carry with you. 2.【Temperament Strip】: Temperament Strip made of felt materials, applied to mute two octaves at once by pushing between the groups of strings with a screwdriver or flattened hammer shank, this is the most efficient way of setting a temperament in, save you a lot of time. 3.【Rubber Mutes Kit】 : 2 rubber mutes with handle and 4 rubber mutes, made of durable and natural rubber and correctly tapered, helps you to mute the section more simply. 4.【Multi-purpose】: Ideal piano tuning kit for apprentices, students, teachers, trainers, professional piano tuners, or anyone who wants to learn piano tuning. 5.【Gifts for those who like musicians】：If your friend or family member is a pianist, he or she needs this set of tools to repair his piano. This set of tuning tools is a meaningful gift for your family, teacher, daughter, son or relatives on Christmas, moving, Thanksgiving or birthday.