Description: brand new and high quality Feature: Rubber material made, oval shape, various types optional, producing a good brass effect. High sensitivity and resolution, Super Articulation Voice. Easy to install and remove, very practical and useful. Strengthen the and stereo sound, bring you excellent experience of stereo sound! Vibration Plates only, other accessories demo in the picture is not included! Specifications: Item Type: Vibration Plate Material: Rubber Size: 20x40mm/0.7x1.5in, 26.7x45mm/1.05x1.7in, 30x60mm/1.1x2.3in, 32x70mm/12x2.7in, 40x60mm/1.5x2.3in, 40x70mm/1.5x2.7in, 47x98mm/1.8x3.8in, 40x80mm/1.5x3.1in, 50x30mm/1.9x1.1in, 50x90mm/1.9x3.5in, 60x90mm/2.3x3.5in Color: Black Optional Type: A: 2040, B: 2845, C: 3060, D: 3270, E: 4060, F: 4070, G: 4798, H: 4080, I: 5030, J: 5090, K: 6090 Quantity: 2 PCS Note: No retail package. Transition: 1cm=10mm=0.39inch Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package Includes: 2 x Vibration Plates