Heavy duty internal gear, economy sealed bass tuning keys set for Precision Bass or Jazz Bass. Fits for 13.5mm peg hole. Color: Black. Great replacement for the 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 used to tune up your bass. Also a great replacement for broken or old bass tuners with heavy duty internal gear. Smooth and shiny, wear-resistant, anti-corrosion, and dust-proof. Quick and accurate tuning. Beautiful shape makes your bass more attractive and helps 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. Only the above package content is included; other products are not included. Note: Light reflection and different displays may cause slight color differences between the image and the actual item. Measurement allows an error of +/- 1-3cm.