["Product Features:\n\nbrand new and high quality\nImprove your listening feeling effect,give you more sweet-sounding.\nThe surface is smooth,and comfortable in touching.\nFor your for health,please replace or clean it every three to six months.\n\nProduct Specification:\n\n10 inch:\nFrame inner diameter:236mm\nDiagonal screw hole center to center distance:261mm\nOutside diameter:275mm\n8 inch:\nFrame inner diameter:210mm\nDiagonal screw hole center to center distance:184mm\nOutside diameter:1221mm\n6.5 inch:\nFrame inner diameter:171mm\nDiagonal screw hole center to center distance:145mm\nOutside diameter:184mm\n5 inch:\nFrame inner diameter:142mm\nDiagonal screw hole center to center distance:117mm\nOutside diameter:152mm\n4 inch:\nFrame inner diameter:112mm\nDiagonal screw hole center to center distance:92mm\nOutside diameter:124mm\n3 inch:\nFrame inner diameter:87mm\nDiagonal screw hole center to center distance:72mm\nOutside diameter:94mm\n2 inch:\nFrame inner diameter:60mm\nDiagonal screw hole center to center distance:46mm\nOutside diameter:65mm\n\nColor:Silver\nMaterial:ABS plastic and metal\n\nNote:\nTo avoid any uncomfortable feeling to your ear,we suggest DO NOT turn the volume on full.\nJust turn the level in minimum and make sure you find the comfortable and good level.\nNote: \n1.Please allow 1-3mm error due to manual measurement. Please make sure you do not mind before you bid.            \n 2.Due to the difference between different monitors, the picture may not reflect  the actual color of the item. Thank you\n\nPackage Include:\n2 x Speaker Decorative Circle"]