Description: 【PREMIUM FELTS】: Sturdy felts help prevent the collision between the cymbal and the metal, protect the cymbal well, and can improve the sound quality and performance of the cymbal. 【COME WITH WING NUTS & WASHERS】: Nuts and washers can make the cymbals and felts pads firmer, ensure you'll from cymbal problems. 【SLEEVES】: These sleeves can ensure the positioning height of the cymbal, which completes the drum set and provide good performance. 【METAL DRUM KEYS】: Drum keys are ideal for quickly and easily removing and replacing drumheads. 【PRACTICAL】: Easy and convenient to install and use. Nice replacements for old or broken parts. Specification: Material: Felts PP Metal  Size Chart: Sleeve Diameter: 3.8cm/1.50inch Felts Pads Diameter: 2.5cm/0.98inch, 4cm/1.57inch and 5cm/1.97inch Nut Diameter: 3.9cm/1.54inch Washer Diameter: 2.2cm/0.87inch T Shape Drum Key: 4.7cmx3.6cmx1cm/1.85inchx1.42inchx0.39inch Z Shape Drum Key: 6.3cmx5cmx1.2cm/2.48inchx1.97inchx0.47inch Package Includes: 4 Pieces 2.5cm Felts Pads 6 Pieces 4cm Felts Pads 2 Pieces 5cm Felts Pads 3 Nuts 3 Washers 3 Sleeves 1 Z Shape Drum Key 1 T Shape Drum Key