Features: The high strength metal guitar string lock ensures precise locking to enhancing tuning stability, preventing string slippage and reducing tuning issues during intense playing. Featuring durability iron and zincs alloys construction with screws for simple installation in under 30 second, this double locking tremolo systems offer durability and resistance to wear for Enduring performances. Ideal for both beginner guitarists and professional musicians, this essential guitar accessory simplifies setup, allowing users to focus on creativity without complex adjustments. Perfect for stage performances and home practice scenarios, it provides reliability compatibility with various electric guitar models, especially double tremolo guitars, adapting to diverse playing styles. Experience improved sound quality with the secure string clamping design, which enhances vibrations response for richer tones, making it a versatile election across musical genres. Specifications: Color:Three Choices Dimension:11.8×11.6mm/0.46×0.45in Component:zincs alloys Package Includes: 1Set Tremolo String Lock note: 1.Please allow 1-2cm errors due to manual measurement, making sure that you will not mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual color.