4-piece guitar strap buckle: 1 set of 4 mushroom head guitar strap buckles, used to fix heavy guitar straps or other products that need to be fixed, such as electric guitars and electric basses, one-step locking, non-slip and non-slip shedding. High Quality Material: High quality metal material, reliable mechanism, the sturdy metal material is professionally machined to ensure durability. Modern Designs: These modern designs fit into any of your guitars. These quick release guitar strap locks are widely used in guitar strap lock systems. The noble design and color matching are more suitable for your outstanding guitar. EASY TO USE: The strap lock system is designed with a two-screw two-layer construction, pull the button and slide it to quickly release the guitar strap button for release/installation. Easy to install and use. Just mount it on the belt and screw it securelyinto the locked position. VERSATILE USE: Suitable for guitar strap locking system, widely used in bass locking system, perfect for acoustic guitar, classical guitar, electric guitar, bass and all standard straps. Strap buttons fit most guitars.