Features: brand new and high quality This product is recommended to be used in hot swap. The soldered version can also be used but it is not convenient enough. The three materials are keysporon, IXPE, and EVA, all of which are self-adhesive primers with certain anti-static properties. This product has been treated with waste, and the excess cutting fragments have been removed from the bottom mold, and only the self-fitting can be left. The three of them are all foam, but the sound texture is different, there is no mystery at all. In comparison, the keysporon is soft, the PE is for tough, and the EVA is stuffy. There is a layer of film on the bottom of the keysporon and the non-sticky glue will be more resistant to tearing. It supports repeated tearing off and then pasting, which is also a major advantage of him. Most people prefer the feeling of EVA. Specifications: Materials: PORON , EVA ,PE(optional) Thickness: 0.5mm Quantity: 120 Size: approx.15x16mm/0.59x0.63in Package Includes: 1 x 120pcs Switch Film note: No retail package. 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!