Features: brand new and high quality This product is made of high quality stainless steel material. Its sound is characterized by very thick sense of density, while maintaining the sense of low volume at the same-time.Greatly improves the high-frequency lines and texture, but also to expand across wider, three-band equalizer. In large dynamic has excellent control force, and the sound field open, rich finish, as if the music has injected vitalities, flew alive! This upgrade than the absolute change of signal lines or power lines more important. By reducing the contact area and pressure increase housing equipment, so as to suppress the vibration generated by thejump, stable direct waves. The appearance of this product is very match, and there will be no sense of violation after installation. Specifications: Material:Stainless Steel Color:Black Size:Approx.39x12mm/1.53x0.47inches Package Includes: 4x Spike Base 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.