●【Durable】:Durable and unbreakable speaker accessories replacement sound quality makes the speaker accessory more clear, this speaker accessory is a must for music lovers ●Type: 2 pieces; Outer diameter: 6.0 inches (152 mm); Middle hole diameter: 1.9 inches (49.5 mm) ●Action: Provides the power to restore the movements of the cone. Voice coil will maintain the correct position of the gap when moved ●[Features]: Flexible; High efficiency; Stability; Easy to install ●Product Name: Speaker Centering Support Piece