Description: 【Professional drum hardware tools】: Drum Keys, designed for adjusting and fixing hardware on drum sets, such as drum legs, stands, and hat stands. The square head design ensures a securely fit with the square screw holes on drum hardware 【Multifunction adjustment function】: Drum Tuning Keys are suitable for loosening or tightening the screws on drum legs and stands to adjust the height and angle of the drum 【Square head design】: Drum Wrench's square head design matches the square screw holes on drum hardware to keep from slipping during adjustment, allowing for a reliable grip 【Portable and sturdy structure】: Drum Key Tuners are made of high strength metal, which is both lightweight and ensures durability, making it easy to carry 【Comprehensive set】: Drum Keys Set includes 3 T shaped wrenches and 1 Z shaped wrench, providing a complete for various adjustment needs Specification: material: stainless steel Size Chart: T shape 4.6cmx0.583cmx1.19cm/1.81inchx0.23inchx0.47inch Z shape 3.48cmx1.19cmx4.90cm/1.37inchx0.47inchx1.93inch Package Includes: 1 Z Shape Drum Key 3 T Shape Drum Keys Note: Please allow slightly errors 1-2cm/0.39-0.79inch differences due to manual measurement.