1、The piano tuning wrench is L-shaped design, made from hard stainless steel and wood handle, durable and abrasion-resistance. 2、Extended temperament strip is 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. 3、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、Perfect piano tuning kit for apprentices, students, teachers, trainers, professional piano tuners, or anyone who wants to learn piano tuning. 5、With the tools, you are able to finish the piano fixing job by yourself, and learn some kind of new ability during this process. The piano tuning tools kit includes tunning hammer wrench, temperament strip, 2 rubber mutes with handle and 4 rubber mutes. It is practical for finish the piano fixing job. Features: The piano tuning wrench is L-shaped design, made from hard stainless steel and wood handle, and abrasion-resistance. Extended temperament strip is 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. 2 rubber mutes with handle and 4 rubber mutes, made of and natural rubber and correctly tapered, helps you to mute the section more simply. Perfect piano tuning kit for apprentices, students, teachers, trainers, professional piano tuners, or anyone who wants to learn piano tuning. With the tools, you are able to finish the piano fixing job by yourself, and learn some kind of new ability during this process. Specifications: Material: Stainless steel + Rubber Item Size: Hammer wrench of wooden handle: Length 160mm / 6.3in Mutes with handle: Length 230mm / 9.05in Rubber mutes: 100 * 13.0mm / 3.94 * 0.51in Temperament strip: 1000mm / 39.37in Package Weight: 173g / 6.1ounces Package Size: 200 * 150 * 50mm / 7.87 * 5.91 * 1.97in Note: The wrench of this practical starter kit is a little short than professional wrench, but the wrench in this kit will not affect the result of use, just need more strength when used. Packing List: 1 * Tunning Hammer Wrench 1 * Temperament Strip 2 * Mutes with Handles 4 * Mutes 1 * Storage Bag 1 * Tunning Hammer Wrench 1 * Temperament Strip 2 * Mutes with Handles 4 * Mutes 1 * Storage Bag