Features: Experience rapid drum setup with our T Shape Metal Drum Keys, featuring a secure locking mechanism and light weight aluminum alloy construction for swifts, reliability performances in any musical setting. The ergonomic nonslip grip and precisions engineered gears ensures smooth operations, while the universals 30mm diameter compatibility eliminates hardware mismatch issues across drum. Designed for drummers, band members, and music educators who demand efficient hardware adjustments during high energy performances or instructional. Perfect for stage shows, studio recordings, and practice rooms where quick drumhead tension changes require durability, road tested accessories that endure repeated installations. Engineered with militaries grade aluminum alloy and anti corrosions coating, these drum hardware accessories maintain structural integrity through thousands of rotations, ensuring professional grade durability for critical music applications. Specifications: Dimension:4.9x6.7cm/1.93×2.64in 4.5×3.6cm1.42×1.77in Component:Metal Package Includes: 2pcs Heavy Type Drum Key note: 1.Please allow 1-2cm errors due to manual measurement, making sure that you will not mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual color.