HIGH QUALITY MATERIAL: This item adopts high quality material with high strength, wearable and durable.They also can prevent wear and tear on the strings, which results in longer string life KEEP TUNE LONGER: The rollers on them can lessen the stress on your strings, which allows the guitar to stay in tune longer. Good accessory for guitar GOOD REPLACEMENT: Great replacement for your broken, dirty or old string retainer. It's easy for you to install it. WITH SCREW ACCESSORY: Our string retainer set come with screw, No need to buy extra screws separately. GOOD CUSTOMER SERVICE: If you have any details, our customer service will explain to you patiently and meticulously. Features: This item adopts high quality material, high strength, wearable and durable. Nice finish and polish, sleek and colorfast. Easy to install and use. Good accessory for guitar. 100% brand new and high quality. Specification: Material: Metal Color Options: Gold; Black; Silver Size: Approx. 1.2 x 1.1cm / 0.47 x 0.43inch Weight: Approx. 3-4g Package List: 2 x String Retainers 2 x Screws