1. PROTECT YOUR GUITAR: Flex Lock Strap Blocks-protecting your instrument and your performance. Turn your favorite guitar strap into a locking guitar strap. 2. NO ADDITIONAL HARDWARE: Affordable strap lock solution without the need to replace any hardware. Strap security at a low cost without needing to your guitar. 3. NO MODIFICATIONS: Without need of modification, the Flex Lock Strap Block clips onto your guitar strap to prevent your strap from releasing accidentally. 4. EASY TO ATTACH: Snap on top of any Guitar Strap for a secure fit Color: Black Material: Rubber Package Contents: 10* Guitar Strap Locks Only the above package content, other products are not included. Note: Light reflection 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.