Feature: 1. This high‑quality hammer most pianos and is specially designed to fit the pins of pianos without damaging the pins. 2. The piano tuning tool has a sturdy handle to help you maintain absolute control when turning. Stability is essential. 3. The star‑shaped tip of this piano tuning tool can be installed at multiple angles and provides additional flexibility. 4. This set of piano tuning tools can adjust everything you need, and the temperament bar is used to mute all external strings in one section at a time. 5. High‑quality mute clamps and rubber mute pads with handles make it very easy to operate on the correct part. Specification: Item Type: Piano Tuner Kit Material: Metal + Rubber + Wood Suitable : Grand Piano Adjustable piano tuning hammer The hammer is octagonal Package List: 1 x Piano Tuning Hammer 2 x Rubber Mute 2 x Rubber Mute 1 x Tape