[24PCS Locks]: locks includes 12pcs gold, 12pcs black strap buckle, 24pcs spacer, 12pcs gold screw, 12pcs black screw. With the use of the , it may wear out and therefore cannot be firmly attached to your guitar. These rubber washer-style locks can help you secure your guitar to the strap. It can be changed in two colors at any time. [Easy to Install]: First you need to pull up of the lock and slide it out to slide out the strap button. Use a screwdriver to remove the current pin and replace it with the pin that was just removed from the strap lock. You just screwed in the pins of the guitar. Remove the washer and nut from the belt lock. Screw the hole on the to , and then replace the washer and nut. Repeat the steps for the other end of the belt. [Wide Uses]: locks are suitable for the lock strap buttons of acoustic guitar, classical guitar, electric guitar, or ukulele and all standard straps. The sturdy lock makes you no longer have to worry about the strap falling off and the instrument falling when playing. [Unique Craft] : The button is made of high-quality metal, and the surface is polished, rust-proof, wear-resistant and durable. With a mushroom-shaped design and chrome-plated silver, the appearance is first-class. It looks more compatible with your instrument.Choose locks,bring you happy music time! colour: black + gold Material: metal Size: diameter about 12mm Package Contents: 12 x Golden locks 12 x Black locks Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.