1. Bottle opener design, can open beer 2. Zinc alloy material, strong and durable 3. High-strength spring, firmly clamped, will not produce buzzing or loss of tuning 4. High-performance silicone pad, which can protect the strings well 5. Easy to install and place 6. Small, sturdy, portable and easy to carry 7. Suitable for: guitar/bass/ukulele
