2piece set of black flat round guitar locks designed for electric guitar parts. Lowprofile, skidproof design keeps straps more secure and reduces accidental slippage while playing or moving the instrument. Key benefits Secure strap attachment: Helps keep the strap seated on round strap buttons to reduce the chance of the strap slipping off during use. Lowprofile and flat: Sits close to the instrument for a natural feel and minimal interference when wearing or storing the guitar. Skidproof surface: Textured round face improves grip between the strap and the button so the strap stays in place under motion. Two pieces included: Enough for one guitar or one guitar plus a spare for quick replacement. Function and compatibility Function: Acts as a locking washer that fits over round strap buttons to add grip and stability for straps on electric guitars. Compatibility: Designed for electric guitars and other stringed instruments that use standard round strap buttons. Compact round shape works with commonly sized round posts. Easy to use: Install quickly by placing over the strap button before attaching the strap. No special tools required for typical installations. Material and performance Built to be durable for regular playing and handling while maintaining a discreet profile. Consistent skidresistant contact helps minimize strap movement without changing how the instrument feels when worn. Practical use scenarios Live performance: Keeps the strap secure during standing gigs and energetic stage movements. Practice and rehearsal: Prevents interruptions caused by strap slippage during long practice sessions. Transport and storage: Adds stability to straps when putting the guitar down or moving between cases and stands. What you get Two black flat round guitar locks suitable for electric guitar strap buttons, ready to install and use as a simple upgrade to strap stability.