Description: 【Material】: This guitar strap lock is made of pp, ensuring durability and longevity. Its glossy finish adds a touch of to your guitar, making it not only functional but also fashionable 【Secure Locking System】: The head strap lock ensures a secure fit, protecting your instrument from accidental release. Easy to install and use, simply connect it to your instrument and firmly screw it into the locking position 【Versatile Use】: This product is suitable for both electric bass guitars and electric guitars. Each guitar requires 2x locks for optimal security 【Product Dimensions】: The screw size is approximately 19.6 x 3 mm, the button outer diameter is about 14.6 mm, and the button height is 11.7 mm 【Package Includes】: Each package comes with two strap locks, two screws, and two washers for easy installation Specification: Material: PP Size Chart: Screw: 1.96cmx3mm/0.77inchx0.12inch Guitar Strap Button DxH: 1.46cmx1.17cm/0.57inchx0.46inch Package Includes: 2 Guitar Strap Buttons  2 Screws 2 Washers(6 Pack) Note: Please allow slight errors of 1-2cm differences due to manual measurement.