Description: Made of high quality chromium-plated steel material, durable and sturdy. The for spinning camber design of the continuous for motion key makes it ideal for quickly and easily removing and replacing drumheads. 3pcs standard drum key,1pc Continuous for Motion Speed Drum Key,Total 4pcs Drum Keys. Never Search for a Drum Key Again! All you need to tighten your heads perfectly. It's perfect as a spare to keep in your stick bag or around the rehearsal space. Suitable for drum kit, snare, etc,Used to change the drum surface,Nice accessory for drum lovers. Specifications: Item name: Drum Keys  Material: Chromium-plated steel Color: Silver Z-type Drum Wrench Size: 6.3*5*1.2cm T-type Drum Wrench Size: 4.7*3.6*1cm Inner diameter of the quadrangle square: 0.55cm Quantity: 1 Set Note:  - There might be little error of size for manual measurement. - The colors deviation might differ due to different settings, please kindly understand.