Features: Brand new and high quality Package includes 120 pieces Switches Silencers pad, the thickness is 3.5mm. Use non-adherent primers and no sticks residues is left behind. Made of soft sponge material with high efficiency noise reduction effect and will not damage your circuit board. This Silencers pad is a fillers arranged between the positioning plate and the circuit board. It is attached to the side of the positioning plate near the circuit board, which can relieve the vibrations transmitted after pressing the shaft body through the shaft floor case, and is used to eliminate part of the cavity sound. There are 2 gaps in the keyboard sandwich cotton to facilitate the insertion of the shaft body buckle. Suitable for office environments, libraries, and other noise sensitive areas where a calm atmosphere is desired. Work without disturbing others. Specifications: Material:Poron/EVA Thickness: 3.5mm Package Includes: 120x Switches Silencers Pad note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.