Heavy duty internal gear, economy sealed bass tuning keys set for Precision Bass or Jazz Bass. Fits 13.5mm peg hole. Color: Black. Great replacement for old, broken tuning pegs. Essential accessory for a bass, perfect for you. Includes 4 pcs (2R2L) bass tuners. Mounting screws, ferrules, and threaded bushings are included. Replacement or upgrade parts for electric Jazz Bass or Precision instruments. Gear ratio: 1:22. Provides finer tuning and greater stability. Made of durable hard zinc alloy material, suitable for 4 or 5 string bass tuning. Quality sealed machine heads designed for tuning your bass; ideal replacement for broken or old tuners. Features heavy duty internal gear. Smooth and shiny finish, wear-resistant, anti-corrosion, and dust-proof for quick and accurate tuning. Sleek design enhances the appearance of your bass, helping you feel more confident during performances. Material: Metal. Package contents: 4 x Bass tuning pegs (2R2L) 4 x Ferrules 4 x Screws 4 x Washers Note: Light reflection and different display settings may cause slight variations in color between the image and the actual item. Measurement allowance: +/- 1-3 cm.