1、6 pcs sealed locking string tuning key, compatible with ST electric guitar. 2、Fits for standard 13/32 inch (10mm) peg holes. Keep your electric guitar always in tune. 3、Gear ratio 1:18, reliable for easy, smooth and precise tuning. High-quality tuning pegs designed for electric guitar. Selected material and concise appearance, precisely crafted, it provides accurate and stable electric guitar tuning. Features: 6 pcs sealed locking string tuning key, compatible with ST electric guitar. Fits for standard 13/32 inch (10mm) peg holes. Keep your electric guitar always in tune. Gear ratio 1:18, reliable for easy, smooth and precise tuning. Auto Locking Tuners (Tuning Pegs). Heavy duty internal gear. Made of metal alloy material, with chrome plated surface, hard, durable and wear resistant. Note: Size and color may be slightly different because of manual measurement and different light conditions. Thanks for understanding. Specifications: Type: 6 Left/ 6 Right/ 3 Left 3 Right (Optional) Surface: Chrome Plated Material: Metal Alloy Package Size: 15 * 10 * 5cm / 5.91 * 3.94 * 1.97in Package Weight: 230g / 8.11oz Package List: 6 * String Tuning Key 6 * Ferrule 6 * Threaded Bushing 6 * Mount Screw 6 * String Tuning Key 6 * Ferrule 6 * Threaded Bushing 6 * Mount Screw