Item Type: Guitar Screws Material: Metal Color: Silver Package List 10 x Guitar Screws 1For Tremolo System: String locking screw replacement, mainly used for guitar tremolo system, to replace the old or damaged, to ensure that the guitar plays well. 2For String Fixing: The string on the guitar bridge can be locked to prevent the guitar string from loosening during playing, which is convenient and practical. 3Metal Material: These guitar bridge screws are made of excellent metal with high hardness, wear and corrosion resistance, can be used for a long time. 4Standard Size: These bridge screws have standard size and clear thread, which are not easy to loosen or slip after installation, stable and reliable. 510Pcs in1 Set: Including 10pcs guitar screws, sufficient quantity for easy installation and replacement, with glossy appearance, safe and durable.