Set of 4 lightweight GOTOH bass tuning machines with mounting screws. These are parts that were on a sub-bass. Used at home for about 10 months. I think they are in relatively good condition. I am selling them because I no longer need them due to a headless modification. - Model: GB350/L2+R2 Chrome - Brand: GOTOH - Color: Chrome - Quantity: Set of 4 - Included: Mounting screws Weight (actual measurement): Approximately 39g/each (including washers, excluding screws) The headstock dive problem, unique to bass guitars. This is more serious with multi-string basses, causing stress during long performances. The RES-O-LITE series was developed to solve this problem. Using special duralumin as the main material, it achieves an astonishing weight reduction. The GB350 model uses Rock-Solid to transmit string vibrations to the headstock without waste, while also achieving stable tuning and a smooth winding feel.