Features: Set of drum mute pads suitable for drum practicer. Self-adhesive design easy to use and take off convenient to carry and collect. Good accessories for drums dampen ringing or overtones you don t want bring you much convenience. Safe and silica gel material will not threat your healthy. Widely applicable for drums or percussion instrument help you to practice better. Specifications: Color: Transparent Material: Silica gel Quantity: 12pcs / 20pcs(optional) Item weight: 23g / 0.81(12pcs) 37g / 1.31oz(20pcs) Item size: 3 * 2.5 * 0.27cm / 1.18 * 0.98 * 0.11in(single pad) Package weight: 24g / 0.85oz(12pcs) 38g / 1.34oz(20pcs) Package size: 15.3 * 10 * 1cm / 6.02 * 3.94 * 0.39in Package list: 12pcs: 12 * Mute Pads 20pcs: 20 * Mute Pads