The piano tuning tools kit includes a tuning hammer wrench, temperament strip, 2 rubber mutes with handle, and 4 rubber mutes. It is practical for completing piano tuning tasks. Features: The piano tuning wrench has an L-shaped design, made from hard stainless steel with a wood handle, offering durability and resistance to abrasion. The extended temperament strip is made of felt material, designed to mute two octaves at once by inserting between groups of strings using a screwdriver or flattened hammer shank. The 2 rubber mutes with handle and 4 rubber mutes are made of durable natural rubber with a tapered shape, allowing for easier muting of string sections. This kit is ideal for apprentices, students, teachers, trainers, professional piano tuners, or anyone interested in learning piano tuning. With these tools, you can perform piano tuning tasks independently and develop new skills in the process. Specifications: Material: Stainless steel + Rubber Item Size: - Hammer wrench with wooden handle: Length 160mm / 6.3in - Mutes with handle: Length 230mm / 9.05in - Rubber mutes: 100 x 13.0mm / 3.94 x 0.51in - Temperament strip: 1000mm / 39.37in Package Weight: 173g / 6.1 ounces Package Size: 200 x 150 x 50mm / 7.87 x 5.91 x 1.97in Note: The wrench in this starter kit is slightly shorter than a professional-grade wrench, but it does not affect tuning performance—slightly more effort may be required during use. Packing List: 1 x Tuning Hammer Wrench 1 x Temperament Strip 2 x Mutes with Handles 4 x Mutes 1 x Storage Bag