Drum Accessories: Drum key is a tool for assembling the drum, can be used to remove the drum and the drumhead, drum tuning key adjusts the tension of the drum so that it can adjust the pitch according to the tension of the drumhead. .High Quality Material: Drum tuning key is made of premium metal, corrosion resistant and durable, can be used for a long time without breaking or deforming. .Portable Size: The inner diameter of Z-type and T-type Drum Wrench is 0.55cm, suitable for most drum. Lightweight for easy carrying and storage. .Used for: Continuous motion speed key with swivel design, ideal for quick and easy disassembly and replacement of the drumhead. Can be used on adjustable hardware such as cymbal stand, drum stool, bracket, etc. .Value Package: You can get 7 pieces drum tuning key, including 1 piece z-type drum wrench and 6 pieces t-type drum wrenches, perfect for drummers and percussionists. .