Construction: The piano wrench is crafted from steel, ensuring durability and longevity. It features a wooden handle that provides a comfortable grip during use Comprehensive Sound Muting Tools: This Sound Muting Tool set includes essential sound muting tools such as the muting strip, which is frequently used for equal temperament adjustments in the reference pitch group Versatile: Designed specifically for piano repair and maintenance, this Piano Maintenance Kit offers all necessary components to assist in tuning and maintaining your instrument effectively Materials: Made from a combination of metal, rubber, and felt, each component of this Mutes Fixing Tool is designed to withstand regular use while providing optimal performance Application: Piano tuning set is suitable for trainers, professional, beginners, or anyone who wants to learn piano tuning Size Chart: wrench :20.5cm/8.07inch muting sticks :20.5cm/8.07inch muting blocks : 10x1.3x1cm/3.94inchx0.51inchx0.39inch 1 muting strip (106x2.5x1.5cm/41.73inchx0.98inchx0.59inch 90 green felts : diameter 2.2cm/0.87inch, thick 0.52cm/0.20inch Package Includes: 1 wrench, 2 muting sticks, 4 muting blocks, 1 muting strip, 90 green felts Note: Please allow slightly errors due to manual measurement and different monitors.