Thank you for your request. We will ship via Letter Pack Light. Specifications ◆ Model Name: GHL-1 ◆ Finish (Color): B / Black ◆ Type: Locking Nut ◆ Nut Width: 43mm ◆ Contents: Locking nut body, tension bar, adjustment wrench, height adjustment spacer/shim, etc. GOTOH, highly regarded both domestically and internationally for its high precision and stable tuning! This is the high-precision locking nut "GHL-1" made by GOTOH. You can use it for a long time with higher tuning accuracy and solid construction. This is a masterpiece that shows GOTOH's attention to detail. Three spacers/metal shims of different thicknesses are included for height adjustment. Fine adjustments can be made to suit the instrument, such as by stacking them. ◆ Both GHL-1 and GHL-2 are 43mm wide locking nuts, and the difference is how the nut is fixed. GHL-1 is fixed with the included screws from the bottom (back side) of the nut, while GHL-2 is fixed with the included screws from the top (front side) of the nut. FGR has a nut width of 41mm and is mainly suitable for Strat/ST type guitars. GHL is a model with a nut width of 43mm and is mainly suitable for Les Paul/LP type guitars. The nut and bridge are where the vibrating strings first transmit their vibrations. If you cut corners here, even a good wood body and neck are meaningless.