Check the listing for details. GOTOH GBR640 Res-o-lite Reverse Wind Bass Tuning Machines - Preconfigured Sets. Color: Black, Condition: New. Listed at 117.99 USD. Guitar and Bass tuning machines are sold by the side of the headstock they are mounted when viewing from the front. Left or Right side is not the same as left or right handed. Please remember this when placing your order. GOTOH GBR640 Reverse Wind Res-o-lite Series Bass Tuning Machines Sold in preconfigured sets - 4L, 4R, 5L, 5R, 2Lx 2R, 3L x 1R, 3L x 2R, 4L x 1R Vintage plate style design Large cloverleaf (elephant ear) tuning knob 1:28 gear ratio Reverse Wind Weight - 2.2oz (62 grams) each Includes mounting screws and bushings The GBR640 is part of GOTOH's Res-o-lite series of super lightweight bass tuning machines heads. GOTOH was able to achieve excellent weight savings by using a special alloy call "duralumin".