Description: brand new and high quality Feature: Environmental for protection silicone material, soft, safe and non-toxic to use. It is suitable for A-T-X desktop computer for case standard power supply. The rubber pad is shock absorption, noise reduction. Reduce the problem of common vibration between the for case and fan. Simple and convenient installation, fixed between fan and fixture, hole location and fan hole location match. Make your computer fan and mainboard work longer and better. Anti-Vibration Rubber Gasket only, other accessories demo in the picture is not included! Specifications: Item Type: Anti-Vibration Rubber Gasket Material: Silicone Size: 8+8cm/3.1+3.1in, 9+9cm/3.5+3.5in, 12+12cm/4.7+4.7in, Thickness: 0.2cm/0.07in Color: Black Quantity: 5PCS 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: 5 x Anti-Vibration Rubber Gasket