Description: 【Design】This tuning tool  has a triangular head that can be easily inserted into the piano's tuning pegs. The double head allows it to adapt to different sizes of tuning nails 【Material】 Piano tuning repair tool  made of metal to ensure its strength and durability 【Features】Horizontal piano double head adjustment wrench. It can precisely tune the piano so that the strings produce the correct pitch. The double ended design allows it to accommodate a variety of tuning pegs of different sizes 【Applicable】Piano wrench tuning tools is mainly suitable for piano tuner or piano enthusiasts. This is an essential tool for anyone who frequently needs to tune their piano 【Size】Piano tuner is 16.6cmx1.2cmx0.5cm/6.54inchx0.47inchx0.20inch,which is small and lightweight, portable and easy to carry Specification: Material:Metal Size Chart: 16.6cmx1.2cmx0.5cm/6.54inchx0.47inchx0.20inch Package Includes: 1 Piano Tuning Repair Tool Note: Please allow slightly errors due to manual measurement and different monitors.