Feature: 1. Excellent Stainless Steel Material: This professional piano tuner kit is made of excellent quality stainless steel material, which is sturdy and abrasion resistant, not easy to be damaged, and has a long service life. 2. Rubber Mute: The mute in this universal piano tuner hammer mute kit is made of nature rubber material and has the correct taper which can help you mute the part more simply. 3. Extended Tuning Bar: This piano tuning lever tool features an extended tuning bar that extends to 118 cm/46.5 inches and allows you to mute two octaves at a time by pushing between sets of strings with a screwdriver or flat hammer handle, which is one of the most efficient ways to set the tuning bar and saves you a lot of time. 4. Exquisite Craftsmanship: This piano tuner hammer mute kit features exquisite craftsmanship and durability to meet tuning needs and is suitable for a wide range of piano models. 5. Wide Application: This universal piano tuning tool has a wide range of applications and is the ideal piano tuner kit for apprentices, students, teachers, trainers, professional piano tuners or anyone who wants to learn piano tuning. Specification: Item Type: Piano Tuning Tool Set Material: Stainless Steel, Rubber, Plastic Application: Various Piano Models. Package List: 1 x Tuning Wrench 2 x Handle Mutes 4 x Mutes 1 x Tuning Lever 1 x Storage Bag