1、GUITAR STRAP LOCKS: This strap non slip block can firmly secure the guitar strap in place, preventing accidental detachment during playing or storing the guitar, simple and effective. 2、BLOCK SPECIFICATIONS: The guitar strap block has an outer diameter of 25mm, an inner diameter of 10mm, and a thickness of 3mm. The reasonable structure ensures long lasting durability. 3、DURABLE MATERIAL: The non slip strap lock is made of excellent PE material, which is soft and lightweight, features wear resistance, no noise, no deformation, and has a long service life. 4、APPLICATION RANGE: This non slip strap lock block is suitable for most standard strap buttons, including electric guitars, acoustic guitars, ukuleles, basses, etc., with strong practicality. 5、EASY INSTALLATION: This kit includes 12 pieces guitar strap button locks, compact and lightweight, easy to install, without the need for drilling or other tools, convenient to use and replace. 12 x Guitar Strap Locks Item Type: Guitar Strap LocksMaterial: PEApplication: For Electric Guitar, Acoustic Guitar, Ukulele, BassOuter Diameter: Approx. 25mm / 1inInner Diameter: Approx. 10mm / 0.4inThickness: Approx. 3mm / 0.12in