Usage Tips: Features: What"s In Package: Include 2pcs bracket tube felts (outer diameter 50mm), 6pcs cymbal felts (outer diameter 40mm), 4pcs clutch felts (outer diameter 40mm) (please note that all felts are will the same inner diameter: 10mm), 3pcs wing nuts (inner diameter 8mm), 3pcs washers (inner diameter 8mm), 3pcs cymbal sleeves, 1pc Zshape drum key, 1pc Tshape drum key. Please refer to the picture for detailed dimensions, and ensure if it is the size you want before purchase. 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 felt pads firmer, ensure you"ll never miss a beat from spinning cymbal problems. Smooth Fit 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. Specifications: Material: Felt, plastic and metal Color: Black / Gray (Optional) Applicable Musical Instrument: Drum set Item Weight: Approx. 197g / 6.9oz Package Size: 15 * 10 * 5cm / 5.9 * 3.9 * 2inch Package Weight: 210g (Black); 192g (Gray) Packing List: 2 * Bracket Tube Felts 6 * Cymbal Felts 4 * Clutch Felts 3 * Wing Nuts 3 * Washers 3 * Cymbal Sleeves 1 * Zshape Drum Key 1 * Tshape Drum Key