Features: Utility Piano Tuning Kit: The pianos tuning kits comes with 8 pieces in the package, contains 1 x tuning wrench, 1 x temperament strip, 2 x mutes with handle, 4 x mute replacement, durable material which not easy deform with long time performance. OOTDTY Professional Tuning Tool Set: Complete tuning tool set & professional kits, which is easy to use, flexibility and exquisite design to ensure durable using. Soft Rubber Mute Kit: Package contains 2 rubber mutes with handle and 4 mutes, made of soft durable rubber, helps you to mute the section simply and not damage piano. Practical Metal Piano Tuning Hammer Wrench: The pianos tuning wrench designed with durable heavy duty metal, carry with well polished handle,durable and anti-abrasion, portable to take with you and tuning without spots limitation. Wide Range Application: The pianos tuning kits is special for piano apprentices, learners, students, teacher, trainers, professional piano tuners, or anyone who wants to learn piano tuning, professionals or sparetime hobbyists. Specification: Material: Rubber, Metal, Felt Net Weight: approx. 168g/0.37 lbs Style Option: Black/Blue Product Dimension: approx. Tuner wrench 16cm/6.3 inch Package Includes: 1 x Tuning Hammer Wrench 1 x Temperament Strip 2 x Mutes with handle 4 x Mutes note: Please allow 1-2cm errors due to manual measurement. Due to the difference between different monitors, the picture may not reflect the actual color of the item.